Subway station foundation pit pipeline suspension protection device

Abstract

The utility model discloses a subway station foundation pit pipeline suspension protection device, belongs to the technical field of underground pipeline protection when a foundation pit is excavated, and is used for solving the technical problem of existing pipeline protection when the foundation pit is excavated. The supporting structures are arranged at the two ends of the position where the rainwater pipe passes through, the top beams are arranged at the top ends of the supporting structures, and the section steel beams are in the same direction with the rainwater pipe and arranged on the two sides of the upper portion of the rainwater pipe. The rainwater pipe is erected on the top beam, and a first suspension structure and a second suspension structure are arranged on the section steel beam in a spaced and crossed mode. The tail end of the first suspension structure and the tail end of the second suspension structure are both connected with a supporting steel ring installed on the rainwater pipe, the supporting steel ring makes contact with the rainwater pipe through a rubber plate, the device is stable in structure, safe and reliable, the rainwater pipe penetrating through a foundation pit is effectively suspended and protected, normal use of the rainwater pipe is not affected in the construction process, and the service life of the rainwater pipe is prolonged. And safe operation of the station is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of underground pipeline protection during foundation pit excavation, in particular to a subway station foundation pit pipeline suspension protection device. Background Art

[0002] The pipeline suspension protection treatment of subway open-cut stations is a key link in subway construction. During the construction process, the pipelines suspended underground need to be protected to ensure construction safety and normal operation of the pipelines.

[0003] During the construction of a certain subway project, many underground pipelines were encountered in the station, all of which needed to be temporarily or permanently relocated. During the construction process, most of the pipelines were permanently and temporarily relocated, creating good conditions for construction. A rainwater pipe with a span of 21.5m was retained across the foundation pit and needed to be effectively protected during construction.

[0004] Therefore, how to provide a subway station foundation pit pipe suspension protection device to protect the rainwater pipe has become an important technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0005] The purpose of this utility model is to overcome the defects of the existing technology and provide a subway station foundation pit pipeline suspension protection device, which is used to solve the problem of protecting existing pipelines during foundation pit excavation, thereby ensuring the safe use of rainwater pipes and smooth and safe construction of stations.

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] The utility model discloses a subway station foundation pit pipeline suspension protection device, comprising:

[0008] Support structures provided at both ends of the rainwater pipe crossing position, a crown beam provided at the top of the support structure, and steel beams provided in the same direction as the rainwater pipe and on both sides above the rainwater pipe;

[0009] The rainwater pipe is erected on the crown beam, and the first suspension structure and the second suspension structure are arranged on the steel beam at intervals and crosswise;

[0010] The ends of the first suspension structure and the second suspension structure are both connected to the supporting steel ring installed on the rainwater pipe, and the supporting steel ring is in contact with the rainwater pipe through a rubber plate.

[0011] Furthermore, the first suspension structure includes steel cables distributed on both sides of the rainwater pipe, one end of the steel cables is connected to the lifting ring on the steel beam, and the other end is connected to the supporting steel ring, wherein the steel cables are equipped with locks for compensating for the length of the steel cables.

[0012] Furthermore, the second suspension structure includes a steel wire rope distributed above the rainwater pipe, one end of the steel wire rope is connected to the lifting ring on the crossbeam of the steel beam, and the other end is connected to the supporting steel ring. The supporting steel ring is a closed ring structure, and the steel wire rope is equipped with a lock to compensate for the length of the steel wire rope.

[0013] Furthermore, the lock is a marine lock with an open turnbuckle.

[0014] Furthermore, the contact position between the crown beam and the rainwater pipe is filled with filler.

[0015] Furthermore, the supporting structure is a retaining pile.

[0016] Furthermore, the steel beam is constructed as an H-shaped steel beam.

[0017] In the above technical solution, the subway station foundation pit pipeline suspension protection device provided by the utility model has the following beneficial effects:

[0018] The subway station foundation pit pipe suspension protection device uses retaining piles as support points and H-shaped steel beams to bear the load and suspend the rainwater pipe. At the same time, the first suspension structure and the second suspension structure are staggered to provide tension, effectively suspending and protecting the rainwater pipe passing through the foundation pit, ensuring the safety of the rainwater pipe so that it can be used normally during construction without affecting its normal use, and ensuring the safe construction of the station, which is conducive to improving construction efficiency and shortening construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 This is a front view of the subway station foundation pit pipeline suspension protection device disclosed in the utility model;

[0021] Figure 2 This is a left view of the subway station foundation pit pipeline suspension protection device disclosed in the utility model;

[0022] Figure 3 This is an AA cross-sectional view of the subway station foundation pit pipeline suspension protection device disclosed in the utility model;

[0023] Figure 4 It is a BB sectional view of a subway station foundation pit pipeline suspension protection device disclosed in the utility model.

[0024] Description of reference numerals:

[0025] Rainwater pipe 1; supporting structure 2; crown beam 3; steel beam 4; first suspension structure 5; second suspension structure 6; lock 7; supporting steel ring 8; rubber sheet 9. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0027] See also Figure 1 、 2 As shown;

[0028] The utility model of the subway station foundation pit pipeline suspension protection device is used to determine the relative position of the pipeline and the excavated foundation pit at the construction site. The suspension protection device includes:

[0029] A support structure 2 is provided at both ends of the passage of the rainwater pipe 1, a crown beam 3 is provided at the top of the support structure 2, and a steel beam 4 is provided on both sides above the rainwater pipe 1 and in the same direction as the rainwater pipe 1. The rainwater pipe 1 is erected on the crown beam 3, and the contact between the rainwater pipe 1 and the crown beam 3 is filled with filler. A support structure 2 is provided above the rainwater pipe 1 and between the steel beam 4. The top of the support structure 2 is connected to the steel beam 4 via the crown beam 3, so that the support structure 2 is used as a support point and the steel beam 4 is used to bear the load and suspend the rainwater pipe 1;

[0030] The first suspension structure 5 and the second suspension structure 6 are spaced apart on the steel beam 4. The rainwater pipe 1 is divided into six spans and five hanging points. The first suspension structure 5 and the second suspension structure 6 are cross-arranged and connected to the hanging points. The ends of the first suspension structure 5 and the second suspension structure 6 are connected to the supporting steel ring 8 installed on the rainwater pipe 1. The supporting steel ring 8 is in contact with the rainwater pipe 1 through the rubber plate 9. The first suspension structure 5 and the second suspension structure 6 provide tension to ensure the safe suspension of the pipeline. The rubber plate 9 plays a role in buffering and protecting the pipeline.

[0031] See also Figure 3 As shown:

[0032] The first suspension structure 5 includes steel wire ropes distributed on both sides of the rainwater pipe 1. One end of the steel wire rope is connected to the lifting ring on the steel beam 4, and the other end is connected to the supporting steel ring 8. The steel wire rope is equipped with a lock 7 for compensating the length of the steel wire rope.

[0033] See also Figure 4 As shown:

[0034] The second suspension structure 6 includes a steel wire rope distributed above the rainwater pipe 1. One end of the steel wire rope is connected to the lifting ring on the crossbeam of the steel beam 4, and the other end is connected to the supporting steel ring 8. The supporting steel ring 8 is a closed ring structure. The steel wire rope is equipped with a lock 7 for compensating the length of the steel wire rope.

[0035] Preferably, the lock 7 is a marine lock with an open turnbuckle.

[0036] Preferably, the supporting structure 2 is a retaining pile.

[0037] Preferably, the steel beam 4 is constructed as an H-shaped steel beam.

[0038] In the above technical solution, the utility model provides a subway station foundation pit pipeline suspension protection device, and the specific suspension construction process is as follows:

[0039] Construction of one retaining pile at the bottom and one on each side of rainwater pipe 1, excavation to the pile top, removal of the pile top, construction of cap beam 3, digging of rainwater pipe trench, installation of rainwater pipe 1, construction of steel beam 4, and connection with the start and end points of the re-drainage design;

[0040] 1) Construction of retaining piles: The retaining piles on both sides of the rainwater pipe 1 passing through the two ends of the foundation pit are constructed strictly according to the retaining pile construction process in the retaining structure construction plan. The pile top elevation is the bottom elevation of the crown beam 3 under the pipe bottom.

[0041] 2) Excavation of trench earthwork: excavate the trench earthwork according to the designed rainwater pipe 1 crossing position, and excavate the soil covering the top of the retaining pile at the same time. For the pile position, all three piles to be constructed should be excavated to the bottom of the crown beam 3, and a working surface should be left around. After mechanical excavation to the designed elevation, the trench bottom should be leveled manually and the slope should be repaired according to the pipeline slope requirements. No large unevenness should be allowed.

[0042] 3) The construction of the crown beam 3 at the bottom of the pipe shall be carried out strictly in accordance with the construction process of the crown beam 3 in the enclosure structure construction plan. The position of the original steel cage of the crown beam 3 at the top of the piles on both sides shall be adjusted before pouring concrete;

[0043] 4) Hoist and connect the rainwater pipe 1 to ensure the quality of the rainwater pipe 1 and ensure that the normal use of the rainwater pipe 1 is not affected during construction;

[0044] 5) Construction of retaining piles on both sides, straightening and adjusting the steel bars of the upper piles of crown beam 3, cleaning up the ash residue, installing the protective layer blocks, setting up the formwork, correcting the verticality and geometric dimensions, and carrying out reinforcement, pouring concrete to the bottom of the upper crown beam 3, and filling the space between the upper crown beam 3 and the lower crown beam 3;

[0045] 6) The construction of the upper crown beam 3 and the installation of the steel beam 4 adopt the same construction technology as the bottom crown beam 3. The steel beam 4 is installed and welded firmly to the pile top steel bar. The steel beam 4 should extend 0.8m outside the crown beam 3 in the length direction. Before installing the steel beam 4, install the eye reinforcement, set the bottom formwork of the crown beam 3, adjust the position, size, elevation, etc., and tie the crown beam 3 steel bars. At the same time, reserve steel bars at both ends. The number of main bars is 3Ф20 more than the 3 bored piles on both sides of the rainwater pipe 1. Tie 1m of steel bars to the outside of the crown beam 3 along the longitudinal direction of the steel beam 4. The type and specification of the steel bars are the same as those of the crown beam 3. Set formwork on both sides of the crown beam 3 and straighten it. The longitudinal ends of the crown beam 3 are sealed with wire mesh, poured with concrete, and vibrated densely with a vibrator in strict accordance with the construction plan of the crown beam 3. Cover and water the concrete for maintenance.

[0046] 7) Install the lifting rings to divide the foundation pit section steel beam 4 into six sections, that is, install lifting rings 5. At the lifting ring position, a circle of rubber sheet 9 is lined on the outside of the rainwater pipe 1. A supporting steel ring 8 is installed on the outside of the rubber plate 9 and fixed firmly to the rainwater pipe 1. The lifting rings at the steel beam 4 and the supporting steel ring 8 are connected with the wire rope of the first suspension structure 5 and the second suspension structure 6 plus the open spiral buckle of the marine lock to ensure verticality, accurate position and firmness. The position and size of each lock 7 are corrected, and each lifting ring is stressed. Considering the arching in the middle of the rainwater pipe 1, the arching height is 3 / 1000, pay attention to the deformation of the rainwater pipe 1, lock 7, and H-shaped steel. After the construction is completed, in order to ensure the stability and safety of the rainwater pipe 1 during the foundation pit excavation and main structure construction, monitoring items such as pipeline deformation, enclosure structure deformation, and surrounding surface settlement deformation are added to the suspended rainwater pipe 1 according to the county's actual situation. Measuring points are arranged and regular inspections are carried out to ensure that safety requirements are fully met and the pipeline is protected.

[0047] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. The subway station foundation pit pipeline suspension protection device is characterized by: include: Support structures (2) provided at both ends of a rainwater pipe (1) passing through a position, a crown beam (3) provided at the top of the support structure (2), and a steel beam (4) provided in the same direction as the rainwater pipe (1) and on both sides above the rainwater pipe (1); The rainwater pipe (1) is mounted on the crown beam (3), and a first suspension structure (5) and a second suspension structure (6) are arranged on the steel beam (4) at intervals and crosswise. The ends of the first suspension structure (5) and the second suspension structure (6) are both connected to a supporting steel ring (8) installed on the rainwater pipe (1), and the supporting steel ring (8) is in contact with the rainwater pipe (1) through a rubber plate (9).

2. The subway station foundation pit pipeline suspension protection device according to claim 1, It is characterized by: The first suspension structure (5) comprises steel wire ropes distributed on both sides of the rainwater pipe (1), one end of the steel wire rope is connected to a lifting ring on the steel beam (4), and the other end is connected to the supporting steel ring (8), wherein a lock (7) is installed on the steel wire rope to compensate for the length of the steel wire rope.

3. The subway station foundation pit pipeline suspension protection device according to claim 1, It is characterized by: The second suspension structure (6) includes a steel wire rope distributed above the rainwater pipe (1), one end of the steel wire rope is connected to the lifting ring on the crossbeam of the steel beam (4), and the other end is connected to the supporting steel ring (8), the supporting steel ring (8) is a closed ring structure, and a lock (7) is installed on the steel wire rope to compensate for the length of the steel wire rope.

4. The subway station foundation pit pipeline suspension protection device according to claim 2 or 3, characterized in that ； The lock (7) is an open-type turnbuckle lock for ships.

5. The subway station foundation pit pipeline suspension protection device according to claim 1 is characterized in that ； The contact position between the crown beam (3) and the rainwater pipe (1) is filled with filler.

6. The subway station foundation pit pipeline suspension protection device according to claim 1 is characterized in that ； The supporting structure (2) is a retaining pile.

7. The subway station foundation pit pipeline suspension protection device according to claim 1 is characterized in that ； The steel beam (4) is constructed as an H-shaped steel beam.

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