Supporting structure for metro open cut station

Abstract

The utility model discloses a supporting structure for a subway open cut station. The supporting structure is provided with a plurality of steel supporting beams. The movable end hanging plate is movably connected with the steel supporting beam; the movable end hanging plates and the fixed end hanging plates are fixedly connected with the steel supporting beams, and the movable end hanging plates and the fixed end hanging plates on the same layer in the foundation pit are arranged in a staggered mode; the lower part of one side of the movable end hanging plate is provided with a supporting hook, and the upper part is provided with a hook; the movable end hanging plate is movably connected with the end plate of the steel support beam through the supporting hook and the hook; a supporting plate is arranged at the lower part of one side of the fixed end hanging plate, and a hook is arranged at the upper part of one side of the fixed end hanging plate; hooks are arranged on the upper portions of the sides, away from the steel supporting beam, of the movable end hanging plate and the fixed end hanging plate and used for being connected with steel enclosing purlins on drilling piles on the two sides of a foundation pit in a hooking mode. The anti-falling device for the steel supporting beam and the steel enclosing purlin is simple in structure and reasonable in stress, and achieves the purposes of effectively preventing the steel supporting beam from falling and guaranteeing safe production.

Description

TECHNICAL FIELD

[0001] The utility model relates to subway construction technical field especially relates to a subway open cut station support structure. BACKGROUND

[0002] Subway station construction methods include open cut method, cover cut method, subsurface excavation method, cover laying method, and expansion excavation method.

[0003] The open cut method excavates a foundation pit under the protection of a certain support system, and after the foundation pit is excavated, the steel support beams in the support system are removed layer by layer from bottom to top. The open cut method has the advantages of ensuring construction safety and quality, strong adaptability to ground conditions, short construction period, and low cost, and has been widely used in various cities in China in recent years. However, the open cut method also has defects. In poor geological conditions and complex environments, if the design or construction is not proper, slope slippage or overall instability of the foundation pit may occur, which may cause serious casualties and disasters. Moreover, the arrangement of steel support beams in the support system is particularly important. Unreasonable stress on the steel support beams may also lead to accidents and casualties.

[0004] Therefore, based on the above problems, how to take remedial measures for the support system to avoid the danger of falling of the steel support beams and to give the construction personnel below enough time to evacuate has become an important technical problem that needs to be solved by the technical personnel in the field. SUMMARY

[0005] The utility model aims at overcoming the defects of the prior art and providing a subway open cut station support structure that can prevent the steel support beams from falling and is reasonably stressed.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] The utility model discloses a subway open cut station support structure, which comprises:

[0008] A plurality of steel support beams;

[0009] An active end hanging plate movably connected with the steel support beam; and

[0010] A fixed end hanging plate fixedly connected with the steel support beam, wherein the active end hanging plates and the fixed end hanging plates of the same layer in the foundation pit are arranged in an interleaved manner;

[0011] The active end hanging plate is provided with a lifting hook at the lower part and a hook at the upper part on one side, and the end plate of the steel support beam is movably connected with the lifting hook and the hook;

[0012] The fixed end hanging plate is provided with a supporting plate at the lower part and the hook at the upper part on one side, and the end plate of the steel support beam is fixedly connected with the supporting plate and the hook.

[0013] The hook is arranged on the side upper part of the steel support beam and the fixed end hanging plate, and is used for hooking connection with a steel enclose purlin on a bored pile on both sides of the foundation pit.

[0014] A steel wire rope is flexibly connected between the steel support beam and the steel enclose purlin.

[0015] Further, the active end hanging plate and the fixed end hanging plate are both Q235 steel plates with a thickness of not less than 20 mm.

[0016] Further, the active end hanging plate and the fixed end hanging plate are both Q235 steel plates with a thickness of not less than 20 mm.

[0017] Further, the steel enclose purlin is provided with a steel corbel for supporting the steel enclose purlin, and the steel corbel is fixedly connected with the bored pile.

[0018] Further, the steel corbel comprises a bracket in a triangular shape, and the bracket is anchored on the bored pile by two expansion tube bolts.

[0019] Further, the steel enclose purlin is provided with a lifting ring, and the steel wire rope is connected with the steel enclose purlin through the lifting ring.

[0020] Further, the steel wire rope is wound around the end part of the steel support beam, and the steel wire rope cannot be tightly pulled between the steel support beam and the steel enclose purlin.

[0021] In the above technical solution, the supporting structure for the subway open excavation station has the following beneficial effects:

[0022] The supporting structure for the subway open excavation station is arranged in the foundation pit in a staggered manner, and the steel support beam is connected with the steel enclose purlin in a form of being hung on the top and supported on the bottom, so that the relatively weak active end is evenly distributed to both sides of the foundation pit, and the quality of the steel support beam is also evenly distributed.

[0023] Secondly, the protective steel wire rope is flexibly connected between the steel support beam and the steel enclose purlin, so that even if the steel support beam falls off due to unexpected circumstances, the protective steel wire rope can pull it and provide enough evacuation time for the construction personnel below. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0025] Figure 1 is a schematic diagram of the connection state of the steel support beam and the movable end hanging plate of the supporting structure for the open-cut subway station disclosed by the present application;

[0026] Figure 2 is a schematic diagram of the connection state of the steel support beam and the fixed end hanging plate of the supporting structure for the open-cut subway station disclosed by the present application;

[0027] Figure 3 is a schematic diagram of the movable end hanging plate structure of the supporting structure for the open-cut subway station disclosed by the present application;

[0028] Figure 3a is a front view of the movable end hanging plate of the supporting structure for the open-cut subway station disclosed by the present application;

[0029] Figure 4 is a schematic diagram of the fixed end hanging plate structure of the supporting structure for the open-cut subway station disclosed by the present application;

[0030] Figure 4a is a front view of the fixed end hanging plate of the supporting structure for the open-cut subway station disclosed by the present application.

[0031] Explanation of reference signs:

[0032] 1, drill pile; 2, steel surrounding purlin; 3, steel corbel; 4, steel support beam; 5, movable end hanging plate; 6, fixed end hanging plate; 7a, hook; 7b, hook; 7c, hook; lifting hook 8; supporting plate 9; lifting ring 10; steel wire rope 11. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical scheme of the present application, the present application will be further described in detail below with reference to the drawings.

[0034] Referring to Figure 1 , 2 as shown;

[0035] The utility model discloses a kind of supporting structures for open-cut subway station, it is applicable to open-cut subway station and open-cut section foundation pit steel support beam 4 erection, this supporting structure includes: several steel support beams 4, movable end hanging plate 5 and fixed end hanging plate 6;

[0036] The active end hanging plate 5 is movably connected with the end of the steel support beam 4, and the fixed end hanging plate 6 is fixedly connected with the end of the steel support beam 4; the active end hanging plate 5 and the fixed end hanging plate 6 of the same layer in the foundation pit are arranged in an interleaving mode, that is, the active end hanging plate 5 and the fixed end hanging plate 6 are arranged alternately, so that the relatively weak active end is evenly distributed to both sides of the foundation pit, and the quality of the steel support beam 4 is also evenly distributed, the steel support beam 4 can be effectively prevented from falling through the active end hanging plate 5 and the steel support beam 4, the structure is simple, and stress is reasonable;

[0037] The active end hanging plate 5 is movably connected with the end of the steel support beam 4, and the fixed end hanging plate 6 is fixedly connected with the end of the steel support beam 4; the active end hanging plate 5 and the fixed end hanging plate 6 of the same layer in the foundation pit are arranged in an interleaving mode, that is, the active end hanging plate 5 and the fixed end hanging plate 6 are arranged alternately, so that the relatively weak active end is evenly distributed to both sides of the foundation pit, and the quality of the steel support beam 4 is also evenly distributed, the steel support beam 4 can be effectively prevented from falling through the active end hanging plate 5 and the steel support beam 4, the structure is simple, and stress is reasonable;

[0038] The fixed end hanging plate 6 is fixedly connected with the end plate of the steel support beam 4 through the hook 7b and the supporting plate 9 arranged on one side of the lower part and the upper part of the fixed end hanging plate 6;

[0039] The active end hanging plate 5 and the fixed end hanging plate 6 are provided with hooks 7c on the upper part of the side away from the steel support beam 4, and are used for being hooked and connected with the steel enclosing purlin 2 on the bored pile 1 on both sides of the foundation pit;

[0040] The support structure further comprises a steel wire rope 11 which is flexibly connected between the steel support beam 4 and the steel enclosing purlin 2, so that even if the steel support beam 4 falls off due to unexpected accidents, the protective steel wire rope 11 can pull the steel support beam 4, avoiding the danger of falling and hurting people, and providing enough evacuation time for the construction personnel below;

[0041] Referring to Figure 3 , 4 as shown in the drawings:

[0042] The active end hanging plate 5 and the fixed end hanging plate 6 are Q235 steel plates with a thickness of not less than 20 mm;

[0043] The active end hanging plate 5 and the fixed end hanging plate 6 are Q235 steel plates with a thickness of not less than 20 mm;

[0044] Specifically, the active end hanging plate 5 is provided with three hooks 7a on the upper part of one side and three supporting hooks 8 on the lower part at intervals, and the active end hanging plate 5 is provided with three hooks 7c on the upper part of the other side at intervals;

[0045] The fixed end hanging plate 6 is provided with two hooks 7b on the upper part of one side at intervals and two supporting plates 9 on the lower part at intervals, the supporting plate 9 comprises a bottom plate and a baffle plate welded on one side of the bottom plate, and the fixed end hanging plate 6 is provided with two hooks 7c on the upper part of the other side at intervals;

[0046] Referring to Figure 1 ,2 as shown:

[0047] Preferably, the lower part of the steel enclosing purlin 2 is provided with a steel corbel 3 for supporting the steel enclosing purlin 2, the steel corbel 3 is fixedly connected with the bored pile 1, the steel corbel 3 comprises a support configured in a triangular shape, the support is anchored on the bored pile 1 by two expansion tube bolts from top to bottom, specifically, the steel corbel 3 is made of L80*8 angle steel, and is anchored on the bored pile 1 by two M25 expansion tube bolts, and a surrounding purlin elevation line needs to be arranged before construction to ensure the accurate position of the corbel, the steel enclosing purlin 2 is made in sections, is hoisted into position by a crane, and is fixed on the steel corbel bracket, and a 60mm gap is left between the back of the steel enclosing purlin 2 and the bored pile 1, and C30 fine stone concrete is used to fill and embed the gap.

[0048] Preferably, a lifting ring 10 is fixedly connected with the steel enclosing purlin 2, the lifting ring 10 is connected with a steel wire rope 11, the steel wire rope 11 is wound around the end part of the steel support beam 4 for two turns, and the steel wire rope 11 is connected between the steel support beam 4 and the steel enclosing purlin 2 in a slightly slack state, so as to avoid the steel wire rope 11 being in a stressed state for a long time, and also to reduce the impact force of the steel support beam 4 on the steel wire rope 11 when the steel support beam 4 falls accidentally.

[0049] In the above technical scheme, the utility model provides a kind of support structure for subway open cut station, with beneficial effects:

[0050] The utility model discloses a support structure for subway open cut station, which is arranged in an interleaved manner between the movable end hanging plate and the fixed end hanging plate in the foundation pit, and the steel support beam is connected to the steel enclosing purlin in a form of being hung up from below, so that the relatively weak movable end is evenly distributed to both sides of the foundation pit, and the quality of the steel support beam is also evenly distributed, and the steel support beam can be effectively prevented from falling by the movable end hanging plate and the steel support beam.

[0051] Secondly, the protective steel wire rope is flexibly connected between the steel support beam and the steel enclosing purlin, so that even if the steel support beam falls due to unexpected circumstances, it can be pulled by the protective steel wire rope, providing enough evacuation time for the construction personnel below, and the support structure is simple and reasonable in stress, effectively preventing the steel support beam from falling and ensuring safe production.

[0052] The above only describes certain exemplary embodiments of the utility model by way of illustration, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the utility model. Therefore, the above drawings and description are illustrative in nature and should not be understood as limiting the scope of protection claimed by the utility model.

Claims

1. A support structure for a subway open-cut station, characterized by, The utility model relates to a kind of support structures for subway open cut station, including: Several steel support beams (4); With the movable end hanging plate (5) of the steel support beam (4) active connection; And With the fixed end hanging plate (6) of the steel support beam (4) fixed connection, wherein, the movable end hanging plate (5) and the fixed end hanging plate (6) of the same layer in foundation pit are arranged in staggered mode; The lower part of one side of the movable end hanging plate (5) is provided with a hook (8), and the upper part is provided with a hook, and the end plate of the steel support beam (4) is connected with the hook (8) and the hook movably; The lower part of one side of the fixed end hanging plate (6) is provided with a supporting plate (9), and the upper part is provided with the hook, and the end plate of the steel support beam (4) is fixedly connected with the hook and the hook; Wherein, the hook of the upper part of the movable end hanging plate (5) and the fixed end hanging plate (6) away from the steel support beam (4) side is used for being connected with the steel encloses purlin (2) on the bored pile (1) of both sides of foundation pit hooking;Still include Steel wire rope (11), which is flexibly connected between the steel support beam (4) and the steel encloses purlin (2).

2. The support structure for subway open cut station according to claim 1, wherein: The movable end hanging plate (5) and the fixed end hanging plate (6) are Q235 steel plates with a thickness of no less than 20 mm.

3. A support structure for a subway open cut station according to claim 1 or 2, Wherein: The movable end hanging plate (5) and the fixed end hanging plate (6) are fixedly connected with the hook and the hook (8) and the supporting plate (9) through welding process in full welding form.

4. The support structure for subway open cut station according to claim 1, wherein: The steel encloses purlin (2) is provided with a steel corbel (3) at the lower part for supporting the steel encloses purlin (2), and the steel corbel (3) is fixedly connected with the bored pile (1).

5. A support structure for a cut-and-cover subway station according to claim 4, characterized in that ； The steel corbel (3) includes a support configured in a triangular shape, and the support is anchored on the bored pile (1) through two expansion tube bolts.

6. The support structure for subway open cut station according to claim 1, wherein: The steel encloses purlin (2) is fixedly connected with a lifting ring (10), and the lifting ring (10) is connected with the steel wire rope (11).

7. A support structure for a subway open cut station according to claim 1 or 6, Wherein: The steel wire rope (11) is wound around the end of the steel support beam (4) for 2 turns, and the steel wire rope (11) cannot be tightly tightened between the steel support beam (4) and the steel encloses purlin (2).

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