CN219100147U - Anti-floating structure combining convex crown beam and square capping beam - Google Patents

Abstract

The utility model discloses an anti-floating structure combining a convex crown beam and a square capping beam, which is used for resisting buoyancy generated by groundwater of a building and further comprises the following components: the fender post and reinforcing bar, all anchor there is the reinforcing bar in fender post, the anti system of floating, and anti system of floating is connected through inside reinforcing bar with the fender post, and anti body system of floating includes: the square capping beam is arranged above the building; the convex crown beam is arranged at the pile top of the guard pile; the convex crown beam is provided with a convex structure; the connector is arranged in the convex crown beam and is used for connecting the convex crown beam and anchored steel bars in the square capping beam; the connector of the square capping beam is pre-buried in the convex crown beam, so that great deviation between the position of the connector and the design position and corrosion and damage of the connector caused by construction of the fender pile are avoided; the method of planting a large number of ribs is avoided, and the construction quality and the construction efficiency are improved; the protruding structure is connected with the supporting beam, so that foundation pit supporting and concrete retaining wall construction are not affected, and a structural top plate and an upturning beam construction space are reserved.

Description

Anti-floating structure combining convex crown beam and square capping beam

Technical Field

The utility model belongs to the technical field of subway station foundation pit engineering, and particularly relates to an anti-floating structure formed by combining a convex crown beam and a square capping beam.

Background

Subway construction combines together with urban construction, causes the condition such as station top earthing inadequately easily, and especially in the higher city of groundwater level, utilizes subway station major structure and earthing dead weight to hardly satisfy the anti requirement of station, needs to set up anti floating structure.

There are two common approaches to the current anti-floating body system:

the first method is that anti-floating piles are arranged at the bottom of a foundation pit according to calculation, and pile top steel bars are directly anchored into a structural bottom plate;

the second method is that the top beam is arranged around the structural roof, and the steel bars of the top beam are anchored into the existing retaining pile wall of the foundation pit in advance.

The second approach is more common because of the additional number of piles and the high cost of the first approach.

In the conventional common method, the connector is pre-buried on the guard pile, and after the station construction is completed, the capping construction is performed, however, the following problems exist:

first, pre-buried connector on the fender post, its construction leads to connector position and design position to produce the deviation easily, handles improperly moreover and causes connector corrosion, damage etc..

Secondly, a post-reinforcement-planting method is basically adopted on site, so that reinforcement planting engineering in a large range is caused, the quality is difficult to ensure, great difficulty is brought to the construction of the top beam, and the construction quality cannot be ensured.

Disclosure of Invention

The technical purpose is that: according to the anti-floating structure combining the convex crown beam and the square capping beam, the connector is embedded in the convex crown beam and used for being connected with the square capping beam, and the purposes that the position of the connector deviates in the construction process and the connector is corroded and damaged can be achieved.

The technical scheme is as follows: in order to achieve the technical purpose, the utility model adopts the following technical means:

the anti-floating structure of protruding formula crown beam and square capping beam combination for the buoyancy that the building resisted groundwater to produce is wherein still includes: the fender post and reinforcing bar, all anchor the reinforcing bar in fender post, the anti system that floats, anti system that floats is connected through inside reinforcing bar with the fender post, anti body system that floats includes:

the square capping beam is arranged above the building and is used for resisting water buoyancy generated underground by the building;

the convex crown beam is arranged at the pile top of the guard pile and is used for connecting the square capping beam;

the convex crown beam is provided with a convex structure for connecting with a supporting beam, and the supporting beam is used for supporting the convex crown beam before construction;

and the connector is arranged in the convex crown beam and is used for connecting the convex crown beam and anchored steel bars in the square capping beam.

Further, the position height of the convex crown beam is the same as that of the square capping beam.

Further, the connector is pre-buried in the convex crown beam and is close to one side of the square capping beam.

Further, the steel bars are screw-thread steel bars and are used for connecting the connector.

Further, the outside of protruding structure is provided with concrete retaining wall.

Further, the building is a structural roof and a structural side wall.

The beneficial effects are that:

1. the connector of the square capping beam is pre-buried in the convex crown beam instead of the guard pile, so that the situation that the position of the connector deviates greatly from the design position and the connector is corroded and damaged in the construction process of the guard pile is avoided.

2. The connector is embedded in the convex crown beam to connect the square capping beam, the connection mode is more accurate and reliable, the problem that the connector in the guard pile cannot correspond to the anchoring steel bar in the square capping beam in the traditional method is solved, the mode of planting a large number of steel bars is avoided, and the construction quality and the construction efficiency are improved.

3. The convex crown beam is provided with a convex structure which can be connected with the supporting beam, so that the foundation pit support and the construction of the concrete retaining wall are not affected, and the construction space of the structural top plate and the upturning beam is reserved.

4. The position heights of the convex crown beam and the square capping beam are the same, and the position height of the square capping beam can be understood to reduce the position height of the convex crown beam, and the position height of the convex crown beam reduces the height of the guard post, so that the cost is saved.

5. The connector is pre-buried in the protruding type crown beam and is close to one side of the square capping beam, concrete on the face of the protruding type crown beam close to the square capping beam is removed more quickly, the operation efficiency is improved, and the cost of removing concrete waste is reduced.

6. The steel bars anchored in the convex crown beam and the square capping beam are screw-thread steel bars, so that the connector can be quickly connected, and the operation efficiency is improved.

Drawings

FIG. 1 is a sectional view of a combination structure of a convex crown beam and a square roof beam;

wherein, 1, convex crown beam; 2. square top beam; 3. a bump structure; 4. a fender post; 5. a support beam; 6. a retaining wall; 7. reinforcing steel bars; 8. a connector; 9. a structural top plate; 10. a structural side wall;

FIG. 2 is a plan view of a combination structure of a convex crown beam and a square roof beam;

wherein, 1, convex crown beam; 2. square top beam; 4. a fender post; 5. a support beam; 6. and (3) a concrete retaining wall.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1-2, an anti-floating structure of a combination of a convex crown beam 1 and a square capping beam 2 is used for resisting buoyancy generated by groundwater of a building, wherein the building is a structural top plate 9 and a structural side wall 10 of a subway station.

Wherein further comprising: the fender post 4 and the steel bar 7, the steel bar 7 is anchored in the fender post 4 and the anti-floating system, the anti-floating system is connected with the fender post 4 through the internal steel bar 7, and the end part of the steel bar 7 is a screw thread steel bar.

The anti-floating body system comprises:

the square capping beam 2 is arranged above the building and is used for resisting the buoyancy of groundwater.

The convex crown beam 1 is arranged at the pile top of the guard pile 4 and is used for connecting the square capping beam 2.

The convex crown beam 1 and the square capping beam 2 are positioned at the same height.

The convex crown beam 1 is provided with a convex structure 3 for connecting with a supporting beam 5, and the supporting beam 5 is used for supporting the convex crown beam 1 before construction; the outer side of the protruding structure 3 is provided with a concrete retaining wall 6.

The connector 8 is arranged in the convex crown beam 1 and is used for connecting the convex crown beam 1 and the steel bars 7 anchored in the square capping beam 2; the connector 8 is pre-buried in the convex crown beam 1 and is close to one side of the square capping beam 2.

The construction method of the anti-floating system by combining the convex crown beam 1 and the square capping beam 2 comprises the following steps:

step one: before construction, underground pipelines, underground construction and structure conditions and ground barriers in the field range are firstly ascertained, and pipeline migration, field leveling and construction guard piles 4 are carried out.

Step two: and chiseling off the pile tops of the guard piles 4, constructing the convex crown beam 1 and the supporting beam 5, and when the steel bars 7 of the convex crown beam 1 are installed, embedding connectors 8 connected with the square crown beam 2 according to the design of the square crown beam 2 to finish the construction of the convex crown beam 1.

Step three: after the construction of the roof 9 with the structure such as the station is finished and reaches the design strength, the supporting beam 5 is cut off, the square-shaped capping beam 2 is constructed, the convex crown beam 1 is roughened towards the surface of the square-shaped capping beam 2, the connector 8 is exposed, the reinforcing steel bars 7 of the square-shaped capping beam 2 are installed, and the square-shaped capping beam 2 is constructed.

Step four: and backfilling earthwork in layers to recover the site and the road.

The above examples are merely illustrative of the preferred embodiments of the utility model and are not intended to limit the spirit and scope of the utility model. Various modifications and improvements of the technical scheme of the present utility model will fall within the protection scope of the present utility model without departing from the design concept of the present utility model, and the technical content of the present utility model is fully described in the claims.

Claims (6)

1. The anti-floating structure of protruding formula crown beam and square capping beam combination for the buoyancy that the building resisted groundwater to produce is wherein still includes: the fender post and reinforcing bar, all anchor the reinforcing bar in fender post, the anti system that floats, anti system that floats is connected through inside reinforcing bar with the fender post, its characterized in that, anti body system includes:

the square capping beam is arranged above the building and is used for resisting water buoyancy generated underground by the building;

the convex crown beam is arranged at the pile top of the guard pile and is used for connecting the square capping beam;

the convex crown beam is provided with a convex structure which is used for being connected with a supporting beam to support the convex crown beam before construction;

and the connector is arranged in the convex crown beam and is used for connecting the convex crown beam and anchored steel bars in the square capping beam.

2. The floating structure of claim 1, wherein the convex crown beam and the square roof beam are positioned at the same height.

3. The floating structure of claim 1, wherein said connector is embedded in said male crown beam and adjacent to one side of said square roof rail.

4. The floating structure of claim 1, wherein the reinforcement bar ends are threaded for connection to the connector.

5. The floating structure of claim 1, wherein a concrete retaining wall is disposed outside the raised structure.

6. The floating structure of claim 1, wherein the building is a roof panel and a side wall.

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