SU907266A1

SU907266A1 - Ferroconcrete yielding anchor

Info

Publication number: SU907266A1
Application number: SU802942412A
Authority: SU
Inventors: Евгений Михайлович Глазунов; Ихиль Иосифович Гроссман; Владимир Александрович Жилкин
Original assignee: Специализированный Проектно-Изыскательский И Экспериментально-Конструкторский Институт "Гидроспецпроект"
Priority date: 1980-06-18
Filing date: 1980-06-18
Publication date: 1982-02-23

Description

(54) ЖЕЛЕ:|ОБЕТОННЫЙ ПОДАТЛИВЫЙ АНКЕР(54) GELS: | COURSE RELATED ANCHOR

1one

Изобретение относитс к железобетонной анкерной крепи и может быть использовано при креплении горных выработок, скальных массивов, бортов карьеров и каньонов рек.The invention relates to reinforced concrete anchor lining and can be used to mount mining, rock formations, pit walls and river canyons.

Известен железобетонный анкер дл креплени горных выработок,в.члючакдций несутций элемент - штангу из арматуры периодического профил , гайку, опорную шайбу, уплотнение дл .удержани омоноличивающего цементно-песчаного раствора, заполн ющего шпур Cl.A reinforced concrete anchor is known for fastening mine workings, including the joints of the non-slutzii element — a rod from a reinforcement of a periodic profile, a nut, a bearing washer, and a seal for holding the grouting cement and sand solution that fills the hole of Cl.

Недостатком такого анкера вл ютс ограниченна несуща способность из-за разрушени раствора на контакте со стержнем, незначительна податливость в пределах деформации свободной части айкера между уплотнением и опорной шайбой, а также необходимость закреплени штанги в устье шпура, сразу после ее введени . При этом штангу с помощью клина прижимают к стенке шпура, вThe disadvantage of such an anchor is the limited carrying capacity due to the destruction of the solution on contact with the rod, a slight compliance within the deformation of the free part of the yoke between the seal and the thrust washer, as well as the need to secure the rod to the hole of the hole immediately after its insertion. In this case, the bar with a wedge pressed against the wall of the hole, in

результате чего ухудшаетс сцепление и антикоррозийна защищенность штанги.the result is a deterioration in the grip and the corrosion resistance of the rod.

Наиболее близким техническим решением к изобретению по технической сущности и достигаемому результату вл етс железобетонный податливый анкер, включающий установленный в шпуре изогнутый арматурный стержень, омоноличенный цементно-песчаным раствором, опорную шайбу и айку.2.The closest technical solution to the invention according to the technical essence and the achieved result is a reinforced concrete anchor, including a curved reinforcing bar installed in the hole, homogeneous with cement-sand mortar, bearing washer and aiku.

Недоста1ком такого анкера вл етс сложность его конструкции, предусматривающей использование специального стержн волнистой формы, а таюке уплотнени дл удержани раствора в замковой части шпура.The disadvantage of such an anchor is the complexity of its design, which involves the use of a special wavy-shaped rod, and a sealing sheet for holding the solution in the castle part of the hole.

Цель изобретени - упрощение конструкции и повышение эксплуатацион ных качеств анкера.The purpose of the invention is to simplify the design and increase the operational qualities of the anchor.

Claims

The goal is achieved by the fact that the end of the rebar, located at the bottom of the hole, is bent perpendicular to the axis of the hole, and the base of the rod is curved in the form of a step, while between the bends the rod is located diagonally in the hole. The drawing shows a reinforced concrete anchor in the hole after installation. The anchor includes a support element of reinforcing bar 1, homopentised with cement-sand mortar 2 and made with a single bend 3 in the end part located in the bottom part of the hole, and a double bend 4 near its base, with the possibility of damping when the output contour is offset. The anchor is equipped with a bearing washer 5 and a nut 6. The anchor is installed as follows. An injector is injected into the hole and a cement-sand mortar 2 is fed. As the hole is filled, the injector is removed. After that, reinforcement bar 1 with bends 3 and 4 is inserted into the bore hole. Double bend 4 near the base of the anchor acts as a seal, keeping solution 2. Below the step bend 4, the solution flows out of the hole. After the mortar has hardened onto the reinforcement bar 1, crepe & t bearing washer 5 and nut 6. Single bend 3 rods in the bottom of the hole prevents the solution-reinforcement from breaking along the contour, resulting in the destruction of the washes only. After the solution-rock contact. The diagonal position of the rod between bends 3 and 4 in the bottom of the hole and near the base of the rod contributes to high-quality monolithic solution of it. The double stepped bend 4 of the rod 1 near its base in the unfilled part of the hole acts as a damper, straightening as the working contour moves and prevents the anchor from overloading during its operation. Claim of the invention Reinforced concrete SJ is a malleable anchor, including a curved rebar installed in the hole, homogeneous with cement-sand mortar, bearing washer and nut, characterized in that, in order to simplify the design and increase the performance of the anchor, the end of the rebar in the bottom part the hole is curved perpendicular to the axis of the hole, and the base of the rod is curved in the form of a step, while between the curves the rod is located diagonally in the hole. Sources of information taken into account in the examination 1. Zaslavsky 10.3. and Mostkov V.M. Fastening underground structures. I., Nedra, 1979, p. 303-304.

2. USSR author's certificate for application number 2921324/03, cl. E 21 D 21/00, 05.05.80 (prototype).