RU2276225C1 - Connection bridge for marine stationary platform - Google Patents

Abstract

FIELD: hydraulic oil production structures, particularly artificial islands mounted on piles or like supports, platforms on raisable legs, namely support parts of connection bridges arranged between oil production platform and inhabited module platform.

SUBSTANCE: connection bridge comprises piers and load-bearing span structure. Each pier comprises support panel, fixedly connected with corresponding platform. Linear displacement limiters are fastened to support panel. The limiters are made as vertical paired parallel panels arranged so that load-bearing span structure piers are installed in-between on support panel. Each pier is made as balance beam fixedly connected with span structure girder by the first end and rested upon support panel by the second end thereof. The second end is made as abutment having oval cross-section. Thrust disc, which provides cooperation with linear displacement limiter with taking into consideration predetermined gap, is arranged on balancing beam body. Longitudinal abutment axis is transversal to load-bearing span structure axis.

EFFECT: provision of pier unification along with simplified structure and provision of bridge operation in marine circumstances.

3 cl, 8 dwg

Description

The invention relates to the field of construction of offshore oil and gas hydraulic structures, in particular to the construction of offshore stationary multi-unit platforms, namely, to the structures of the supporting parts of the transition bridge between the oil production platform and the residential module platform.

A technical solution is known, which is characterized in that the supporting linearly fixed part of the bridge contains a lower element with a spherical concave surface and a spherical surface of the upper element, which allows the bridge to span angular displacements in all three planes of Cartesian coordinates without linear displacements / 1 /.

However, this design is quite complex in technological design, since the interaction of the lower and upper elements occurs along large mating surfaces, which requires additional structural means to reduce their friction.

A known technical solution in which the linearly movable part of the bridge is performed using rollers that provide linear movement of the movable part of the bridge / 2 /.

This design is also complex and functionally unsuitable for use in marine conditions.

Known bridge, including supports and bearing span / 3 - prototype /.

The well-known technical solution is aimed at solving the problem of constructive unification of the abutments and supporting parts of the bridge, however, both supporting parts of the bridge span are made with the possibility of linear movement, which entails great dynamic loads that the bridge design experiences during its operation.

The present invention is aimed at increasing the unification of the bridge supports with a simplification of the design while making it possible to operate the bridge in marine conditions.

This goal is achieved by the fact that the bridge between the oil platform and the residential module platform includes supports and a supporting span, each of the supports contains a base plate rigidly connected to the corresponding platform, linear limiters made in the form of vertically paired are rigidly connected to the base plate plates located parallel to each other, between which a support span support is installed on the base plate, made in the form of a balancer, with one end rigidly connected to the span truss, and w ring, made in the form of an oval cross-sectional heel is mounted on a base plate, wherein said balance body is thrust disk for interaction with a linear displacement limiters preassigned within the gap and the longitudinal axis is perpendicular to the axis of the heel bearing span.

In this case, the fixed support is equipped with two pairs of linear displacement stops, the plates of which are perpendicular to each other.

The movable support is equipped with one pair of linear movement stops, the plates of which are parallel to the axis of the bearing span.

The invention is illustrated in figures 1-8.

Figure 1 shows a General view of the transition bridge between the offshore platform and the residential module. FIG. 2 is a plan view of FIG. 1. Figure 3 is a General view of a stationary supporting part. Figure 4 is a view along arrow A in figure 3. In Fig.5 is a top view of the base plate of the fixed part of the support along BB in Fig.4. Figure 6 is a General view of the movable supporting part. In Fig.7 is a view along arrow B in Fig.6. In Fig. 8 is a top view of the base plate of the movable part of the support along D-G in Fig. 7.

The transition bridge (Figs. 1 and 2) is located between the oil production platform 1 and the housing module 2 platform, includes movable supports 3, fixed supports 4 and a bearing span 5. Each of the supports (Figs. 3-8) contains a base plate 6, rigidly connected with the appropriate platform. Limiters of linear displacements 7 are rigidly connected with the base plate 6, made in the form of vertically located and parallel to each other plates, between which the supporting span supports 5 are mounted on the base plate 6. Each support is made in the form of a balancer 8, one end rigidly connected to the span truss 5 and the second, made in the form of an oval in cross section of the heel 9, is installed on the base plate 6. On the body of the balancer 8 is a thrust disk 10 to ensure interaction with the limiters of linear displacements 7 within annogo clearance δ ₁ (Figure 5) or δ ₂ (Figure 8), the heel and the longitudinal axis 9 situated perpendicular to the axis of flight of the carrier 5.

The fixed support 3 (Fig.3-5) is equipped with two pairs of parallel linear limiters 7, the plates of which are perpendicular to each other.

The movable support 4 (Fig.6-8) is equipped with one pair of linear displacement stops 7, the plates of which are parallel to the axis of the carrier span 5. Moreover, between the plates - the linear displacement stops 7 and the thrust disk 10, a predetermined clearance δ ₁ or δ _{2 is} provided for enabling limited horizontal movement of the support 4.

Thus, the working conditions of the transition bridge provide for the mounting of its bearing span between the oil production platform 1 and the platform of the residential module 2, as follows.

On the side of the oil refining platform 1, the transition bridge is fixed so that free horizontal movements of the supports 4 in the longitudinal and transverse directions are excluded, and the possibility of turning the supports in a vertical plane parallel to the longitudinal axis of the carrier span 5 and the horizontal plane is ensured. At the same time, the provided technological gap δ ₁ between the linear displacement stops 7 and the thrust disk 10 (Fig. 5) provides the possibility of the mentioned rotations.

On the platform side of the residential module 2, supports 3, in addition to rotations in the vertical and horizontal planes, have the possibility of longitudinal movement and limited lateral displacement δ ₂ within the predetermined dimensions (Fig. 8) and unlimited movement in the direction of the longitudinal axis of the carrier span 5.

The proposed technical solution allows us to simplify the construction of the bridge bridge, to unify the design of the supports, with observance of functions that contribute to achieving appropriate reliability during operation in marine conditions.

Literature

1. RF patent No. 2143024, cl. E 01 D 19/04 dated 05/14/99

2. RF patent No. 2062380, cl. E 01 D 19/04 dated 12/30/93

3. A.S. USSR No. 903462, class E 01 D 7/02 from 05/10/84 - the prototype.

Claims (3)

1. The transition bridge between the oil production platform and the housing module platform, including supports and a supporting span, characterized in that each of the supports contains a base plate rigidly connected to the corresponding platform, linear limiters made in the form of vertically arranged pairwise arranged with the base plate and plates parallel to each other, between which support span supports are installed on the base plate, each of which is made in the form of a balancer, which is rigidly connected with one end to the span truss and the second, made in the form of an oval in cross-section of the heel, is mounted on the base plate, while on the body of the balancer there is a thrust disk to ensure interaction with the linear movement limiters, taking into account the predetermined gap, and the longitudinal axis of the heel is perpendicular to the axis of the bearing span. 2. The transition bridge according to claim 1, characterized in that the movable support is provided with one pair of linear displacement limiters, the plates of which are parallel to the axis of the carrier span. 3. The transition bridge according to claim 1, characterized in that the fixed support is provided with two pairs of linear displacement stops, the plates of which are perpendicular to each other.

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