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WO2017071111A1 - 地下管廊防护结构 - Google Patents

地下管廊防护结构 Download PDF

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Publication number
WO2017071111A1
WO2017071111A1 PCT/CN2016/000493 CN2016000493W WO2017071111A1 WO 2017071111 A1 WO2017071111 A1 WO 2017071111A1 CN 2016000493 W CN2016000493 W CN 2016000493W WO 2017071111 A1 WO2017071111 A1 WO 2017071111A1
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WIPO (PCT)
Prior art keywords
pipe gallery
underground pipe
pile
protection structure
soil mixing
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PCT/CN2016/000493
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French (fr)
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周兆弟
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/18—Bulkheads or similar walls made solely of concrete in situ
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution

Definitions

  • the invention belongs to the technical field of construction and relates to an underground pipe gallery protection structure, which is suitable for protecting an underground pipe gallery.
  • the underground pipe gallery also known as the common ditch, is a municipal public facility that implements unified planning, design, construction, and maintenance, and is built underground in the city for laying municipal public pipelines. It refers to a public tunnel used for centralized laying of municipal, pipelines such as electricity, communications, radio and television, water supply, drainage, heat, and gas in underground cities.
  • the State Council attaches great importance to the promotion of the construction of urban underground integrated pipe corridors. Since 2013, it has issued the “Opinions of the State Council on Strengthening Urban Infrastructure Construction” and the “Guiding Opinions of the General Office of the State Council on Strengthening the Management of Urban Underground Pipelines”. Pilot work on the construction of the pipe gallery.
  • the Chinese patent document discloses an integrated underground pipe gallery with a compensating device [Application No.: 201410559745.1], comprising a plurality of pipe joint sealing strips and a plurality of pipe joint units connected end to end, the pipe joint sealing strips being arranged adjacent to each other
  • the pipe joint unit includes a pipe joint and a plurality of pipes arranged in parallel, and the pipe is disposed on a bottom surface of the pipe joint through a fixing seat, and the pipe joints are respectively provided at both ends of the pipe joint a pipe joint telescopic connecting pipe having a shape of a pipe joint, wherein the pipe ends are respectively provided with a pipe expansion joint pipe, and the pipe joint expansion pipe is provided with a flange one end away from the pipe joint, the pipe A flange 2 is disposed at one end of the telescopic connecting pipe away from the pipe.
  • the above solution effectively reduces the difficulty of construction and installation, improves the installation efficiency of the pipe gallery and the pipeline, saves a lot of construction time and cost, and at the same time, the prefabricated pipe joint has large bearing capacity and good compression resistance. However, the protective effect of the soil around the pipe gallery on the pipe gallery is ignored.
  • An object of the present invention is to provide an underground pipe gallery protection structure for protecting an underground pipe gallery in response to the above problems.
  • an underground pipe gallery protection structure comprising two opposite cement soil mixing pile walls, the cement soil mixing pile wall is made of a plurality of cement soil mixing piles in the radial direction Interconnected, two underground soil mixing pile walls form an underground pipe gallery receiving cavity.
  • the two cement-soil mixing pile walls are respectively provided with a plurality of prefabricated piles on the side close to the underground pipe gallery accommodating cavity, and the prefabricated piles are closely attached to the cement soil mixing pile wall.
  • the prefabricated piles are connected to each other in the radial direction to form a prefabricated pile wall having the same length as the cement soil mixing pile wall.
  • the prefabricated pile is provided with a concave-convex engaging mechanism, and the adjacent pre-formed piles are closely adhered to each other through the concave-convex engaging mechanism.
  • the concave-convex engaging mechanism includes a protrusion extending outside the pre-pile and a recess recessed into the interior of the pre-pile, the shape of the protrusion and the recess It is sized to fit two adjacent prefabricated piles in close contact.
  • the prefabricated pile is provided with a longitudinal reinforcing rib and a lateral reinforcing rib, and the lateral reinforcing rib is adjacent to the end of the underground pipe arranging cavity and has an energy and an underground pipe gallery.
  • the connecting member is connected to the rib connecting mechanism.
  • the rib connecting mechanism includes a connecting nut located inside the prefabricated pile and fixedly connected to the end of the lateral rib, and the connecting nut has an internal thread.
  • the rib connection mechanism includes a connection end extending outside the precast pile.
  • the connecting end is fixed with a connecting nut, or the end of the connecting end has a collar protruding outward in the radial direction of the connecting end, or the connecting end is bent After folding, a hook is formed.
  • the prefabricated pile has a connecting portion protruding to the outside of the precast pile, and the connecting portion is inserted into the cement soil mixing pile wall and fixedly connected with the cement soil mixing pile wall.
  • the invention has the advantages that the cement soil mixing pile wall plays a role in hardening and strengthening the soil around the underground pipe gallery, and plays a horizontal positioning of the pipe gallery, and the prefabricated pile and the cement soil mixing pile wall become The integrated structure further strengthens the soil around the underground pipe gallery; in addition, the prefabricated piles and the underground pipe gallery are connected by the rib connection mechanism to prevent the settlement of the underground pipe gallery.
  • Figure 1 is a schematic view of the structure provided by the present invention.
  • FIG. 2 is a schematic diagram of the present invention
  • Figure 3 is a schematic cross-sectional view of a precast pile
  • Figure 4 is a schematic cross-sectional view of another precast pile
  • Figure 5 is a schematic cross-sectional view of another precast pile
  • Figure 6 is a schematic cross-sectional view of another precast pile
  • Figure 7 is a schematic cross-sectional view of another precast pile
  • Figure 8 is a schematic cross-sectional view of another precast pile
  • Figure 9 is a schematic cross-sectional view of another precast pile
  • Figure 10 is a schematic cross-sectional view of another precast pile
  • Figure 11 is an enlarged view of A of Figure 1;
  • Figure 12 is an enlarged view of B of Figure 1;
  • Figure 13 is an enlarged view of a portion C of Figure 1;
  • Figure 14 is an enlarged view of D of Figure 1;
  • Figure 15 is an enlarged view of E at Figure 2.
  • cement soil mixing pile wall 1 cement soil mixing pile wall 1, underground pipe gallery receiving cavity 2, prefabricated pile 3, concave and convex locking mechanism 4, protruding portion 5, recessed portion 6, longitudinal reinforcing rib 7, transverse reinforcing rib 8, reinforcing rib
  • the connecting mechanism 9 the connecting nut 10, the connecting end 11, the collar 12, the hook 13, the connecting portion 14, the underground pipe gallery 100, the connecting rib 101, and the soil layer 102.
  • an underground pipe gallery protection structure includes two opposite cement soil mixing pile walls 1 located in the soil layer 102, and the cement soil mixing pile wall 1 is formed by a plurality of cement soil mixing piles. Connected to each other, there is no gap between the cement-soil mixing piles, and an underground pipe gallery accommodating cavity 2 is formed in the middle of the two cement-soil mixing pile walls 1, as shown in Fig. 2, the underground pipe gallery 100 is placed in the underground pipe gallery In the chamber 2, the underground pipe gallery 100 may be cast in the underground pipe gallery accommodating chamber 2, or may be prefabricated into various shapes of pipes and then placed into the underground pipe porch accommodating chamber 2.
  • the shape of the cement-soil mixing pile wall 1 should be changed accordingly. Therefore, the two cement-soil mixing pile walls 1 are not necessarily parallel, and may be curved, or The distance between the two cement-soil mixing pile walls 1 is adjusted according to the width of the underground pipe gallery 100.
  • the cement soil mixing pile is made by the prior art and is a method for reinforcing the low foundation of the saturated soft clay. It uses cement as a curing agent, and the soft soil and the curing agent are forced in the depth of the foundation through a special mixing machine. Stirring, using a series of physical and chemical reactions between the curing agent and the soft soil, the soft soil is hardened into a high-quality foundation with integrity, water stability and a certain strength.
  • the Chinese patent No. [201210445899.9] provides a six-axis cement-soil mixing pile. When six cement-soil mixing piles are formed at the same time, seamless joints can be achieved, and the joint formed by the original single-shaft or two-shaft cement-soil mixing pile can be reduced. Improve water stopping effect and construction efficiency and reduce labor consumption.
  • Two cement soil mixing pile walls 1 are respectively provided with a plurality of prefabricated piles 3 on one side of the underground pipe gallery accommodating chamber 2, and the prefabricated piles 3 are closely attached to the cement soil mixing pile wall 1.
  • the prefabricated piles 3 may be spaced apart on the side of the cement soil mixing pile wall.
  • the precast piles 3 are connected to each other in the radial direction to form a prefabricated pile wall having the same length as the cement soil mixing pile wall 1, thereby prefabricating
  • the pile wall and the cement-soil mixing pile wall 1 form an integrated structure, and the underground pipe gallery 100 inside the underground pipe arranging cavity 2 has a stronger and reliable protection effect.
  • the precast pile 3 is provided with a concave-convex engaging mechanism 4, and the adjacent precast piles 3 are closely adhered to each other by the concave-convex engaging mechanism 4, thereby forming an integrated prefabricated pile wall.
  • the concave-convex engaging mechanism 4 includes a projection 5 extending outside the precast pile 3 and a recessed portion 6 recessed into the interior of the precast pile 3, the projection 5 being adapted to the shape and size of the recessed portion 6 to enable Two adjacent precast piles 3 are brought into close contact with each other.
  • the embodiment is not limited.
  • the cross section of the precast pile 3 is triangular, as shown in FIG. 5, FIG. 6, and FIG.
  • a polygon as shown in Fig. 7, the precast pile 3 has a T-shaped cross section, and as shown in Figs. 9 and 10, the precast pile 3 has a circular cross section.
  • the prefabricated pile 3 has a connecting portion 14 projecting to the outside of the prefabricated pile 3, and the connecting portion 14 is inserted into the cement-soil mixing pile wall 1 and is mixed with the cement-soil mixing pile wall. 1 fixed connection.
  • the T-pillar shown can be inserted into the cement-soil mixing pile wall 1 and fixedly connected thereto.
  • the prefabricated pile 3 is provided with a longitudinal reinforcing rib 7 and a lateral reinforcing rib 8 , which are combined with FIGS. 11-14 , and the transverse reinforcing rib 8 is adjacent to the end of the underground pipe gallery accommodating cavity 2 .
  • the rib connecting mechanism 9 includes a coupling nut 10 which is located inside the precast pile 3 and is fixedly coupled to the end of the lateral rib 8, and the coupling nut 10 has an internal thread.
  • the rib attachment mechanism 9 includes a connection end 11 that extends out of the exterior of the precast pile 3.
  • a coupling nut 10 is fixed to the connecting end 11.
  • the end of the connecting end 11 has a collar 12 projecting outward in the radial direction of the connecting end 11, as shown in FIG.
  • the connecting end 11 is bent to form a hook 13 .
  • FIG. 2 when there is a lateral connecting rib 101 in the inner lower pipe gallery 100, as shown in FIG. 15, the connecting end 11 can overlap, snap or screw the connecting ribs 101 of the underground pipe gallery 100.
  • the precast pile 3 and the underground pipe gallery 100 form an interaction in the horizontal direction to prevent the underground pipe gallery 100 from settling.
  • the material of the longitudinal reinforcing rib 7, the lateral reinforcing rib 8, the connecting rib 101, and the like may be steel bars, steel bars, steel strands, chemical profiles such as carbon fibers, and the like.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

一种地下管廊防护结构，包括两条相对置的水泥土搅拌桩墙（1），水泥土搅拌桩墙（1）由若干水泥土搅拌桩沿径向相互连接而成，两条水泥土搅拌桩墙（1）中间形成地下管廊容置腔（2）。

Description

地下管廊防护结构 技术领域
本发明属于建筑技术领域，涉及一种地下管廊防护结构，适用于防护地下管廊。
背景技术
地下管廊又称共同沟，它是实施统一规划、设计、施工和维护，建于城市地下用于敷设市政公用管线的市政公用设施。是指在城市地下用于集中敷设电力、通信、广播电视、给水、排水、热力、燃气等市政管线的公共隧道。
早在上世纪二十年代，日本首都东京市政机构就在市中心九段地区的干线道路下，将电力、电话、供水和煤气等管线集中铺设，形成了东京第一条地下综合管廊。此后，1963年制定的《关于建设共同沟的特别措施法》，从法律层面规定了日本相关部门需在交通量大及未来可能拥堵的主要干道地下建设“共同沟”。国土交通省下属的东京国道事务所负责东京地区主干线地下综合管廊的建设和管理，次干线的地下综合管廊则由东京都建设局负责。
北京早在1958年就在天安门广场下铺设了1000多米的综合管廊。2006年在中关村西区建成了我国大陆地区第二条现代化的综合管廊。该综合管廊主线长2公里，支线长1公里，包括水、电、冷、热、燃气、通讯等市政管线。1994年，上海市政府规划建设了大陆第一条规模最大、距离最长的综合管廊——浦东新区张杨路综合管廊。该综合管廊全长11.125公里，收容了给水、电力、信息与煤气等四种城市管线。上海还建成了松江新城示范性地下综合管廊工程(一期)和“一环加一线”总长约6公里的嘉定区安亭新镇综合管廊系统。中国与新加坡联合开发的苏州工业园基础设施建设，经过10年的开发，地下管线走廊也已初具规模。
国务院高度重视推进城市地下综合管廊建设，2013年以来先后印发了《国务院关于加强城市基础设施建设的意见》、《国务院办公厅关于加强城市地下管线建设管理的指导意见》，部署开展城市地下综合管廊建设试点工作。
中国专利文献公开了一种带补偿装置的集成式地下管廊[申请号：201410559745.1]，包含若干管节密封条和若干首尾相接的管节单元，所述管节密封条设于相邻所述管节单元之间，所述管节单元包括管节和若干平行设置的管道，所述管道通过固定座设于所述管节内部的底面上，所述管节两端分别设有与所述管节形状相适配的管节伸缩连接管，所述管道两端分别设有管道伸缩连接管，所述管节伸缩连接管远离所述管节的一端设有法兰一，所述管道伸缩连接管远离所述管道的一端设有法兰二。上述方案有效降低了施工安装的难度，提高了管廊和管道的安装效率，节省大量施工时间和费用，同时预制成型的管节承载能力大，抗压效果好。但是，忽略了管廊周围土质对管廊的防护作用。
发明内容
本发明的目的是针对上述问题，提供一种用于保护地下管廊的地下管廊防护结构。
为达到上述目的，本发明采用了下列技术方案：一种地下管廊防护结构，包括两条相对置的水泥土搅拌桩墙，所述的水泥土搅拌桩墙由若干水泥土搅拌桩沿径向相互连接而成，两条水泥土搅拌桩墙中间形成地下管廊容置腔。
在上述的地下管廊防护结构中，所述的两条水泥土搅拌桩墙靠近地下管廊容置腔的一侧分别设有若干预制桩且预制桩与水泥土搅拌桩墙紧贴。
在上述的地下管廊防护结构中，所述的预制桩沿径向相互连接从而形成与水泥土搅拌桩墙长度相同的预制桩墙。
在上述的地下管廊防护结构中，所述的预制桩上设有凹凸卡接机构，相邻的预制桩通过凹凸卡接机构相互紧密贴合。
在上述的地下管廊防护结构中，所述的凹凸卡接机构包括延伸出预制桩外部的凸出部及向预制桩内部凹进的凹进部，所述的凸出部与凹进部形状和大小相配适从而能使两根相邻的预制桩紧密贴合连接。
在上述的地下管廊防护结构中，所述的预制桩内设有纵向加强筋和横向加强筋，且所述的横向加强筋靠近地下管廊容置腔的端部具有能与地下管廊内的连接件相连接的加强筋连接机构。
在上述的地下管廊防护结构中，所述的加强筋连接机构包括位于预制桩内部且与横向加强筋的端部固定连接的连接螺母，所述的连接螺母具有内螺纹。
在上述的地下管廊防护结构中，所述的加强筋连接机构包括延伸出预制桩外部的连接端。
在上述的地下管廊防护结构中，所述的连接端上固定有连接螺母，或所述的连接端的端部具有沿连接端的径向向外凸出的卡圈，或所述的连接端弯折后形成卡勾。
在上述的地下管廊防护结构中，所述的预制桩上具有向预制桩外部突出的连接部，所述的连接部插入到水泥土搅拌桩墙中并与水泥土搅拌桩墙固定连接。
与现有的技术相比，本发明的优点在于：水泥土搅拌桩墙对地下管廊周围的土质起到硬化加固作用，起到对管廊的横向定位，预制桩与水泥土搅拌桩墙成为一体式结构，进一步加固了地下管廊的周围的土质；另外，预制桩与地下管廊通过加强筋连接机构连接后能起到防止地下管廊沉降的作用。
附图说明
图1是本发明提供的结构示意图；
图2本发明提供的原理图；
图3是预制桩的横截面示意图；
图4是另一种预制桩的横截面示意图；
图5是另一种预制桩的横截面示意图；
图6是另一种预制桩的横截面示意图；
图7是另一种预制桩的横截面示意图；
图8是另一种预制桩的横截面示意图；
图9是另一种预制桩的横截面示意图；
图10是另一种预制桩的横截面示意图；
图11是图1的A处放大图；
图12是图1的B处放大图；
图13是图1的C处放大图；
图14是图1的D处放大图；
图15是图2的E处放大图。
图中：水泥土搅拌桩墙1、地下管廊容置腔2、预制桩3、凹凸卡接机构4、凸出部5、凹进部6、纵向加强筋7、横向加强筋8、加强筋连接机构9、连接螺母10、连接端11、卡圈12、卡勾13、连接部14、地下管廊100、连接筋101、土层102。
具体实施方式
下面结合附图和具体实施方式对本发明做进一步详细的说明。
如图1所示，一种地下管廊防护结构，包括位于土层102中的两条相对置的水泥土搅拌桩墙1，所述的水泥土搅拌桩墙1由若干水泥土搅拌桩沿径向相互连接而成，水泥土搅拌桩之间不存在间隙，两条水泥土搅拌桩墙1中间形成地下管廊容置腔2，如图2所示，地下管廊100置于地下管廊容置腔2内，地下管廊100可以是在地下管廊容置腔2内现浇，也可以是预制呈各种形状的管道状后放入到地下管廊容置腔2内。本领域技术人员应当理解，根据地下管廊100的形状，水泥土搅拌桩墙1的形状应作出相应的改变，因此，两条水泥土搅拌桩墙1并非一定平行，也有可能是弯曲的，或者两条水泥土搅拌桩墙1之间的距离会根据地下管廊100的宽度作出相应的调整。
水泥土搅拌桩的制作方法为现有技术，是用于加固饱和软黏土低地基的一种方法，它利用水泥作为固化剂，通过特制的搅拌机械，在地基深处将软土和固化剂强制搅拌，利用固化剂和软土之间所产生的一系列物理化学反应，使软土硬结成具有整体性、水稳定性和一定强度的优质地基。申请号为[201210445899.9]的中国专利提供一种六轴水泥土搅拌桩，六根水泥土搅拌桩同一时间形成，则可实现无缝搭接，减少原单轴或二轴水泥土搅拌桩形成的接缝，提高止水效果和施工效率，减少用工量。
两条水泥土搅拌桩墙1靠近地下管廊容置腔2的一侧分别设有若干预制桩3且预制桩3与水泥土搅拌桩墙1紧贴。预制桩3可以是间隔的设置在水泥土搅拌桩墙边上，在本实施例中，预制桩3沿径向相互连接从而形成与水泥土搅拌桩墙1长度相同的预制桩墙，从而使预制桩墙与水泥土搅拌桩墙1形成一体式结构，对地下管廊容置腔2内部的地下管廊100起到更牢固、可靠的保护作用。
如图3所示，预制桩3上设有凹凸卡接机构4，相邻的预制桩3通过凹凸卡接机构4相互紧密贴合，从而形成一体式的预制桩墙。凹凸卡接机构4包括延伸出预制桩3外部的凸出部5及向预制桩3内部凹进的凹进部6，所述的凸出部5与凹进部6形状和大小相配适从而能使两根相邻的预制桩3紧密贴合连接。
至于预制桩3的横截面形状，本实施例不做限定，如图3和图4所示，预制桩3横截面为三角形，如图5、图6、图8所示，预制桩3横截面为多边形，如图7所示，预制桩3横截面为T形，如图9和图10所示，预制桩3横截面为圆形。
如图4、图5、图10所示，预制桩3上具有向预制桩3外部突出的连接部14，所述的连接部14插入到水泥土搅拌桩墙1中并与水泥土搅拌桩墙1固定连接。另外，对于如图7 所示的T形桩，其本身就能插入到水泥土搅拌桩墙1内与其固定连接。
如图1所示，预制桩3内设有纵向加强筋7和横向加强筋8，再结合图11-14所示，且所述的横向加强筋8靠近地下管廊容置腔2的端部具有能与地下管廊内的连接件相连接的加强筋连接机构9。
如图11所示，加强筋连接机构9包括位于预制桩3内部且与横向加强筋8的端部固定连接的连接螺母10，所述的连接螺母10具有内螺纹。
如图1所示，加强筋连接机构9包括延伸出预制桩3外部的连接端11。如图12所示，连接端11上固定有连接螺母10，如图13所示，连接端11的端部具有沿连接端11的径向向外凸出的卡圈12，如图14所示，所述的连接端11弯折后形成卡勾13。如图2所示，在当地下管廊100内部具有横向的连接筋101时，再结合图15所示，连接端11可以与地下管廊100的连接筋101相互交叠、卡接或螺接，从而使预制桩3与地下管廊100形成在水平方向上的相互作用，防止地下管廊100沉降。
本领域技术人员应当理解，纵向加强筋7、横向加强筋8、连接筋101等的材质可以是钢棒、钢筋、钢绞线、化工型材如碳纤维等。
本文中所描述的具体实施例仅仅是对本发明精神作举例说明。本发明所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，但并不会偏离本发明的精神或者超越所附权利要求书所定义的范围。

Claims (10)

  1. 一种地下管廊防护结构，其特征在于，包括两条相对置的水泥土搅拌桩墙(1)，所述的水泥土搅拌桩墙(1)由若干水泥土搅拌桩沿径向相互连接而成，两条水泥土搅拌桩墙(1)中间形成地下管廊容置腔(2)。
  2. 根据权利要求1所述的地下管廊防护结构，其特征在于，所述的两条水泥土搅拌桩墙(1)靠近地下管廊容置腔(2)的一侧分别设有若干预制桩(3)且预制桩(3)与水泥土搅拌桩墙(1)紧贴。
  3. 根据权利要求2所述的地下管廊防护结构，其特征在于，所述的预制桩(3)沿径向相互连接从而形成与水泥土搅拌桩墙(1)长度相同的预制桩墙。
  4. 根据权利要求2所述的地下管廊防护结构，其特征在于，所述的预制桩(3)上设有凹凸卡接机构(4)，相邻的预制桩(3)通过凹凸卡接机构(4)相互紧密贴合。
  5. 根据权利要求4所述的地下管廊防护结构，其特征在于，所述的凹凸卡接机构(4)包括延伸出预制桩(3)外部的凸出部(5)及向预制桩(3)内部凹进的凹进部(6)，所述的凸出部(5)与凹进部(6)形状和大小相配适从而能使两根相邻的预制桩(3)紧密贴合连接。
  6. 根据权利要求2所述的地下管廊防护结构，其特征在于，所述的预制桩(3)内设有纵向加强筋(7)和横向加强筋(8)，且所述的横向加强筋(8)靠近地下管廊容置腔(2)的端部具有能与地下管廊内的连接件相连接的加强筋连接机构(9)。
  7. 根据权利要求6所述的地下管廊防护结构，其特征在于，所述的加强筋连接机构(9)包括位于预制桩(3)内部且与横向加强筋(8)的端部固定连接的连接螺母(10)，所述的连接螺母(10)具有内螺纹。
  8. 根据权利要求6所述的地下管廊防护结构，其特征在于，所述的加强筋连接机构(9)包括延伸出预制桩(3)外部的连接端(11)。
  9. 根据权利要求8所述的地下管廊防护结构，其特征在于，所述的连接端(11)上固定有连接螺母(10)，或所述的连接端(11)的端部具有沿连接端(11)的径向向外凸出的卡圈(12)，或所述的连接端(11)弯折后形成卡勾(13)。
  10. 根据权利要求2所述的地下管廊防护结构，其特征在于，所述的预制桩(3)上具有向预制桩(3)外部突出的连接部(14)，所述的连接部(14)插入到水泥土搅拌桩墙(1)中并与水泥土搅拌桩墙(1)固定连接。
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