Construction structure for collision between pile foundation dustpan opening reinforcing steel bars on raft slope in foundation pit and embedded supports

Abstract

The utility model discloses a construction structure for collision between pile foundation dustpan opening reinforcing steel bars on a raft slope in a foundation pit and an embedded support, which comprises a concrete support embedded in a raft, pile foundations distributed on the raft slope and pile foundation dustpan openings arranged on the pile foundations. The pile foundation dustpan opening at least comprises concrete and longitudinal reinforcing steel bars and distributed reinforcing steel bars in the concrete, the longitudinal reinforcing steel bars comprise upper reinforcing steel bars and lower reinforcing steel bars, the upper reinforcing steel bars are embedded in the concrete supports at the positions where the upper reinforcing steel bars collide and interfere with the longitudinal reinforcing steel bars, embedded parts are embedded in the bottoms and the side portions of the concrete supports respectively, and rear steel plates are welded to the embedded parts. The lower reinforcing steel bars are welded to the rear steel plate at the bottom, the upper reinforcing steel bars and the lower reinforcing steel bars are connected through the embedded parts and the rear steel plate, and the distribution reinforcing steel bars on the upper portion of the pile foundation dustpan opening are welded to the rear steel plate on the side, so that the distribution reinforcing steel bars are connected with the concrete support. The connecting strength, the structural stability and the vertical bearing capacity of the pile foundation, the raft and the concrete support can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building engineering, in particular to a construction structure in which a pile foundation dustpan mouth steel bar on a raft slab slope in a foundation pit collides with an embedded support. Background Art

[0002] In order to better disperse the concentrated stress and reduce the horizontal thrust of the soil on the foundation raft, the edge of the foundation raft is often beveled into a slope at an angle of 60°. When the raft is thicker or the pile foundation is denser, some pile foundations will be arranged on the slope. In order to strengthen the connection between the pile foundation and the foundation raft, a dustpan opening is usually set on the top of the pile foundation to expand the top of the pile foundation and strengthen the connection between the two. The dustpan opening includes steel bars composed of longitudinal steel bars, circumferential steel bars and distribution steel bars and concrete poured on them. When the support is embedded in the raft, the longitudinal steel bars of the dustpan opening often collide with the support due to the close distance between the support and the dustpan opening of the pile foundation on the slope, and cannot penetrate the support anchor upward into the raft. When the upper distribution steel bars collide with the support, position collision interference occurs and cannot be arranged normally, resulting in the lack of distribution steel bars and the deterioration of the structural strength of the dustpan opening of the pile foundation. The situation in which the longitudinal reinforcement at the dustpan mouth cannot be normally anchored into the raft structure due to collision with the support, and the distribution steel beam cannot be arranged due to collision with the support, resulting in the missing of the longitudinal reinforcement and distribution reinforcement will cause the connection strength between the raft and the pile foundation, the structural stability and the vertical bearing capacity to fail to meet the calculated value requirements and become worse. If no measures are taken, it will cause major safety hazards to the building and structure. If remedial measures are taken after the support is completed, it will not only consume manpower, but also affect and possibly damage the supporting structure, and also cause corresponding safety hazards. Utility Model Content

[0003] The purpose of the utility model is to provide a construction structure for the collision between the reinforcement bars of the pile foundation dustpan mouth on the raft slab slope in the foundation pit and the embedded support, so as to solve the problem that when the longitudinal reinforcement bars of the pile foundation dustpan mouth on the raft slab slope in the foundation pit collide with the embedded support, the longitudinal reinforcement bars of the pile foundation dustpan mouth cannot pass through the support anchor into the raft slab, resulting in the deterioration of the connection strength and vertical bearing capacity between the pile foundation and the raft slab, posing a safety hazard, and to solve the problem that when the distributed reinforcement bars at the upper part of the pile foundation dustpan mouth collide with the support, the position collision and interference occur and the normal arrangement cannot be made, resulting in the missing of the distributed reinforcement bars and the deterioration of the structural strength of the pile foundation dustpan mouth.

[0004] In order to solve the above technical problems, the utility model provides a construction structure in which the reinforcement bars of a pile foundation dustpan mouth on a raft slab slope in a foundation pit collide with an embedded support, comprising a concrete support embedded in the raft slab, pile foundations distributed on the raft slab slope, a pile foundation dustpan mouth connected to the raft slab and the concrete support is arranged above the pile foundation, the pile foundation dustpan mouth comprises concrete and longitudinal reinforcement bars, distributed reinforcement bars, annular reinforcement bars and trumpet-shaped reinforcement bars therein, the longitudinal reinforcement bars comprise upper reinforcement bars and lower reinforcement bars, the upper reinforcement bars are pre-embedded in the concrete support at a position where the reinforcement bars collide and interfere with the longitudinal reinforcement bars of the pile foundation dustpan mouth and extend upwards to be embedded in the raft slab, the An embedded part is buried at the position where the bottom of the concrete support collides and interferes with the longitudinal steel bars of the pile foundation dustpan mouth and at the position where the side of the concrete support collides and interferes with the distributed steel bars of the pile foundation dustpan mouth. A rear steel plate is vertically welded to each of the embedded parts. The lower steel bars of the longitudinal steel bars of the pile foundation dustpan mouth are welded to the rear steel plate at the bottom of the concrete support, so that the upper steel bars are connected to the lower steel bars through the embedded parts and the rear steel plate at the corresponding positions. The distributed steel bars on the upper part of the pile foundation dustpan mouth are welded to the rear steel plates on both sides of the concrete support, so that the distributed steel bars on the upper part of the pile foundation dustpan mouth are connected to the concrete support.

[0005] Furthermore, the utility model provides a construction structure in which the pile foundation dustpan mouth steel bars on the raft slope in the foundation pit collide with the embedded support, the transverse bent section of the lower steel bar passes through the raft slope and is buried in the raft, the distributed steel bar passes through the raft slope and is buried in the raft, and the trumpet-shaped steel bar that collides and interferes with the raft slope position passes through the raft slope and is buried in the raft.

[0006] Furthermore, the utility model provides a construction structure in which the pile foundation dustpan mouth steel bars on the raft slab slope in the foundation pit collide with the embedded support, and the annular steel bars are anchored on the concrete support.

[0007] Furthermore, the utility model provides a construction structure in which the pile foundation dustpan mouth steel bars on the raft slope in the foundation pit collide with the embedded support, the embedded parts include an anchor plate and anchor bars thereon, the anchor bars are buried in the concrete support and welded to the skeleton steel bars in the concrete support, and the anchor plate is at least partially exposed from the surface of the concrete support.

[0008] Furthermore, the utility model provides a construction structure in which the pile foundation dustpan mouth steel bars on the raft slope in the foundation pit collide with the embedded support, and the upper steel bars and the lower steel bars are aligned and distributed in the vertical direction.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0010] The utility model provides a construction structure for the collision between the reinforcement bars of the pile foundation dustpan mouth and the embedded support on the raft slab slope in the foundation pit. The upper reinforcement bars of the longitudinal reinforcement bars are pre-embedded at the position where the concrete support collides and interferes with the longitudinal reinforcement bars of the pile foundation dustpan mouth, an embedded part is constructed at the position where the bottom of the concrete support collides and interferes with the longitudinal reinforcement bars of the pile foundation dustpan mouth, the concrete support and the upper reinforcement bars are embedded in the raft slab, a rear steel plate is vertically welded to the embedded part at the bottom of the concrete support, the lower reinforcement bars of the pile foundation dustpan mouth are welded to the rear steel plate at the bottom of the concrete support, the upper reinforcement bars are connected with the lower reinforcement bars through the embedded part and the rear steel plate, so that the longitudinal reinforcement bars of the pile foundation dustpan mouth pass through the concrete support and are embedded in the raft slab. The connection strength between the longitudinal steel bars and the concrete support and the raft slab is improved, the structural stability and vertical bearing capacity of the pile foundation, raft slab and concrete support are improved, and the problem of the longitudinal steel bars at the dustpan mouth of the pile foundation on the raft slab slope in the foundation pit colliding and interfering with the embedded support, resulting in the inability of the longitudinal steel bars at the dustpan mouth of the pile foundation to pass through the support anchor into the raft slab, causing the connection strength and vertical bearing capacity of the pile foundation and the raft slab to deteriorate, posing a safety hazard.

[0011] The utility model provides a construction structure for the collision between the reinforcement bars of the pile foundation dustpan mouth and the embedded support on the raft slope in the foundation pit, wherein an embedded part is constructed at each position where the side of the concrete support collides and interferes with the distributed reinforcement bars of the pile foundation dustpan mouth, and the distributed reinforcement bars on the upper part of the pile foundation dustpan mouth are welded to the rear steel plates on both side parts of the concrete support, so that the distributed reinforcement bars on the upper part of the pile foundation dustpan mouth are connected with the concrete support, so that the distributed reinforcement bars on the upper part of the pile foundation dustpan mouth that collides and interferes with the concrete support can be arranged normally, thereby improving the connection strength between the pile foundation dustpan mouth and the concrete support, and solving the problem that the distributed reinforcement bars on the upper part of the pile foundation dustpan mouth cannot be arranged normally due to position collision and interference when colliding with the support, resulting in missing of the distributed reinforcement bars and deterioration of the structural strength of the pile foundation dustpan mouth. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the elevation structure of the construction structure where the reinforcement bars at the dustpan mouth of the pile foundation on the raft slope in the foundation pit collide with the embedded support;

[0013] Figure 2 It is a schematic diagram of the cross-sectional structure of setting embedded parts and post-installed steel plates on concrete supports;

[0014] Figure 3 It is a structural diagram of embedded parts;

[0015] As shown in the figure:

[0016] 1. Pile foundation;

[0017] 2. Concrete support;

[0018] 3. raft, 31. slope;

[0019] 4. Pile foundation dustpan mouth, 41. Upper steel bars, 42. Embedded parts, 43. Post-installed steel plates, 44. Lower steel bars, 45. Transverse bending sections, 46. Distribution steel bars, 47. Annular steel bars, 48. Trumpet-shaped steel bars, 49. Concrete. DETAILED DESCRIPTION

[0020] The utility model is described in detail below in conjunction with the accompanying drawings: According to the following description, the advantages and features of the utility model will be more clearly understood. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model.

[0021] Please refer to Figures 1 to 3 , an embodiment of the utility model provides a construction structure in which the reinforcement of the pile foundation dustpan mouth on the raft slab slope in the foundation pit collides with the embedded support, comprising a concrete support 2 embedded in the raft slab 3, pile foundations 11 distributed on the slope 31 of the raft slab 3, a pile foundation dustpan mouth 4 connected to the raft slab 3 and the concrete support 2 is arranged above the pile foundation 1, the pile foundation dustpan mouth 4 comprises concrete 49 and longitudinal reinforcement, distribution reinforcement 46, annular reinforcement 47 and trumpet-shaped reinforcement 48 therein, the longitudinal reinforcement comprises an upper reinforcement 41 and a lower reinforcement 44, the upper reinforcement 41 is pre-embedded in the concrete support 2 at a position where it collides and interferes with the longitudinal reinforcement of the pile foundation dustpan mouth 4 and extends upward to be embedded in the raft slab 3, the concrete support 2 An embedded part 42 is buried at the position where the bottom collides and interferes with the longitudinal steel bars of the pile foundation dustpan mouth 4 and at the position where the side of the concrete support 2 collides and interferes with the distributed steel bars 46 of the pile foundation dustpan mouth 4. A rear steel plate 43 is vertically welded to each of the embedded parts 42. The lower steel bars 44 of the longitudinal steel bars of the pile foundation dustpan mouth 4 are welded to the rear steel plate 43 at the bottom of the concrete support 2, so that the upper steel bars 41 are connected to the lower steel bars 44 through the embedded parts 42 and the rear steel plates 43 at the corresponding positions. The distributed steel bars 46 on the upper part of the pile foundation dustpan mouth 4 are welded to the rear steel plates 43 on both sides of the concrete support 2, so that the distributed steel bars 46 on the upper part of the pile foundation dustpan mouth 4 are connected to the concrete support 2.

[0022] Please refer to Figure 1 The embodiment of the utility model provides a construction structure in which the pile foundation dustpan mouth steel bars on the raft slab slope in the foundation pit collide with the embedded support, the transverse bending section of the lower steel bar 44 passes through the raft slab 3 slope 31 and is buried in the raft slab 3, the distribution steel bar 46 passes through the raft slab 3 slope 31 and is buried in the raft slab 3, and the trumpet-shaped steel bar 48 that collides and interferes with the position of the raft slab 3 slope 31 passes through the raft slab 3 slope 31 and is buried in the raft slab 3.

[0023] Please refer to Figure 1In the construction structure provided by the embodiment of the utility model, the pile foundation dustpan mouth steel bars on the raft slope in the foundation pit collide with the embedded support, and the annular steel bars 47 are anchored on the concrete support 2.

[0024] Please refer to Figure 3 The embodiment of the utility model provides a construction structure in which the pile foundation dustpan mouth steel bars on the raft slope in the foundation pit collide with the embedded support. The embedded part 42 includes an anchor plate and anchor bars thereon. The anchor bars are buried in the concrete support 2 and welded to the skeleton steel bars in the concrete support 2. The anchor plate is at least partially exposed from the surface of the concrete support 2.

[0025] Please refer to Figures 1 to 3 The utility model provides a construction method for colliding the reinforcement bars at the dustpan mouth of the pile foundation on the raft slope in the foundation pit with the embedded support, comprising:

[0026] Step 501, when the longitudinal steel bars of the pile foundation dustpan opening 4 on the slope 31 of the raft 3 in the foundation pit collide and interfere with the embedded support, the longitudinal steel bars of the pile foundation dustpan opening 4 on the slope 31 of the raft 3 in the foundation pit are divided into upper steel bars 41 and lower steel bars 44.

[0027] Step 502, construct a concrete support 2 in the foundation pit. When constructing the concrete support 2, embed the upper steel bars 41 of the longitudinal steel bars at the position where the concrete support 2 collides and interferes with the longitudinal steel bars of the pile foundation dustpan mouth 4, so that the upper steel bars 41 extend upward from the concrete support 2; construct an embedded part 42 at the position where the bottom of the concrete support 2 collides and interferes with the longitudinal steel bars of the pile foundation dustpan mouth 4 and at the position where the side of the concrete support 2 collides and interferes with the distributed steel bars of the pile foundation dustpan mouth 4.

[0028] Step 503 , constructing the raft 3 . During the construction of the raft 3 , the concrete support 2 and the upper steel bars 41 are embedded in the raft 3 , and a post-installed steel plate 43 is vertically welded on each embedded part 42 of the concrete support 2 .

[0029] Step 504, construct a pile foundation dustpan mouth 4 above the pile foundation 1 on the slope 31 of the raft 3, weld the lower steel bar 44 of the longitudinal steel bar of the pile foundation dustpan mouth 4 to the rear steel plate 43 at the bottom of the concrete support 2, and make the upper steel bar 41 connected with the lower steel bar 44 through the embedded parts 42 and the rear steel plate 43 at the corresponding position, so that the longitudinal steel bar of the pile foundation dustpan mouth 4 passes through the concrete support 2 and is buried in the raft 3, wherein the upper steel bar 41 serves as the part of the longitudinal steel bar of the pile foundation dustpan mouth 4 buried in the raft 3.

[0030] Step 505 , welding the distribution steel bars 46 on the upper part of the pile foundation dustpan opening 4 to the rear steel plates 43 on both sides of the concrete support 2 , so that the distribution steel bars 46 on the upper part of the pile foundation dustpan opening 4 are connected to the concrete support 2 .

[0031] Please refer to Figure 1 In order to improve the connection strength between the pile foundation dustpan opening 4 and the raft 3, the construction method for colliding the pile foundation dustpan opening steel bars on the raft slope in the foundation pit provided by the embodiment of the utility model with the embedded support can also include:

[0032] Step 506, pass the transverse bending section of the lower steel bar 44 through the slope 31 of the raft slab 3 and bury it into the raft slab 3, pass all the distribution steel bars 46 through the slope 31 of the raft slab 3 and bury them into the raft slab 3, pass the trumpet-shaped steel bar 48 that collides and interferes with the position of the slope 31 of the raft slab 3 through the slope 31 of the raft slab 3 and bury it into the raft slab 3.

[0033] Please refer to Figure 1 In order to improve the connection strength between the pile foundation dustpan opening 4 and the concrete support 2, the construction method for colliding the pile foundation dustpan opening steel bars on the raft slope in the foundation pit provided by the utility model embodiment with the embedded support can also include:

[0034] Step 507 , anchoring the annular reinforcement 47 on the concrete support 2 .

[0035] Please refer to Figure 1 In order to construct a complete pile foundation dustpan opening 4, the construction method for colliding the pile foundation dustpan opening reinforcement bars on the raft slope in the foundation pit provided by the embodiment of the utility model with the embedded support can also include:

[0036] Step 508, wrap the lower steel bars 44, the distribution steel bars 46, the annular steel bars 47, and the trumpet-shaped steel bars 48 to pour the concrete 49 of the pile foundation dustpan mouth 4 to form the pile foundation dustpan mouth 4, so that the pile foundation 1, the raft 3 and the concrete support 2 are connected together through the pile foundation dustpan mouth 4.

[0037] Please refer to Figure 1 In order to improve the embedding strength of the longitudinal steel bars, the embodiment of the utility model provides a construction method in which the pile foundation dustpan mouth steel bars on the raft slope in the foundation pit collide with the embedded support, and the upper steel bars 41 and the lower steel bars 44 are aligned and distributed in the vertical direction.

[0038] Please refer to Figures 2 to 3 The embodiment of the utility model provides a construction method for the collision between the pile foundation dustpan mouth steel bars on the raft slope in the foundation pit and the embedded support. The embedded part 42 includes an anchor plate and anchor bars thereon. The anchor bars are buried in the concrete support 2 and welded to the skeleton steel bars in the concrete support 2. The anchor plate is at least partially exposed from the surface of the concrete support 2.

[0039] The embodiment of the utility model provides a construction method and structure for the collision between the pile foundation dustpan mouth reinforcement and the embedded support on the raft slab slope in the foundation pit, by pre-embedding the upper reinforcement 41 of the longitudinal reinforcement at the position where the concrete support 2 collides and interferes with the longitudinal reinforcement of the pile foundation dustpan mouth 4, constructing an embedded part 42 at the bottom of the concrete support 2 where the collision and interference occur between the longitudinal reinforcement of the pile foundation dustpan mouth 4, burying the concrete support 2 and the upper reinforcement 41 in the raft slab 3, vertically welding a rear steel plate 43 on the embedded part 42 at the bottom of the concrete support 2, welding the lower reinforcement 44 of the pile foundation dustpan mouth 4 to the rear steel plate 43 at the bottom of the concrete support 2, making the upper reinforcement 41 connected with the lower reinforcement 44 through the embedded part 42 and the rear steel plate 43, so that the longitudinal reinforcement of the pile foundation dustpan mouth 4 passes through the concrete support 2 and is buried in the raft slab 3. The connection strength between the longitudinal steel bars and the concrete support 2 and the raft 3 is improved, the structural stability and vertical bearing capacity of the pile foundation 1, the raft 3 and the concrete support 2 are improved, and the problem that when the longitudinal steel bars of the pile foundation dustpan mouth 4 on the slope 31 of the raft 3 in the foundation pit collide and interfere with the embedded support, the longitudinal steel bars of the pile foundation dustpan mouth 4 cannot pass through the support anchor into the raft 3, resulting in the connection strength and vertical bearing capacity of the pile foundation 1 and the raft 3 being reduced, posing a safety hazard.

[0040] The embodiment of the utility model provides a construction method and structure for the collision between the pile foundation dustpan mouth steel bars and the embedded support on the raft slope in the foundation pit, wherein an embedded part 42 is constructed at each position where the side of the concrete support 2 collides and interferes with the distributed steel bars 46 of the pile foundation dustpan mouth 4, and the distributed steel bars 46 on the upper part of the pile foundation dustpan mouth 4 are welded to the rear steel plates 43 on both side parts of the concrete support 2, so that the distributed steel bars 46 on the upper part of the pile foundation dustpan mouth 4 are connected to the concrete support 2, so that the distributed steel bars 46 on the upper part of the pile foundation dustpan mouth 4 that collides and interferes with the concrete support 2 can be arranged normally, thereby improving the connection strength between the pile foundation dustpan mouth 4 and the concrete support 2, and solving the problem that the distributed steel bars 46 on the upper part of the pile foundation dustpan mouth 4 cannot be arranged normally due to position collision and interference when colliding with the support, resulting in the loss of the distributed steel bars 46 and the deterioration of the structural strength of the pile foundation dustpan mouth 4.

[0041] The utility model provides a construction method and structure for preventing the steel bars at the dustpan opening of the pile foundation on the raft slope in the foundation pit from colliding with the embedded support, thereby overcoming the hidden danger of structural safety caused by the inability to connect, bury or arrange the longitudinal steel bars and distributed steel bars at the dustpan opening of the pile foundation.

[0042] The present utility model is not limited to the above-mentioned specific implementation modes. Obviously, the above-mentioned embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the described embodiments of the present utility model belong to the scope of protection of the present utility model. Those skilled in the art can make other levels of modifications and changes to the present utility model. In this way, if these modifications and changes of the present utility model fall within the scope of the claims of the present utility model, the present utility model is also intended to include these changes and changes.

Claims

1. A construction structure in which the pile foundation dustpan mouth steel bars on the raft slope in the foundation pit collide with the embedded support, characterized in that: The invention comprises a concrete support embedded in a raft slab, pile foundations distributed on the slope of the raft slab, a pile foundation dustpan opening connected to the raft slab and the concrete support is arranged above the pile foundation, the pile foundation dustpan opening comprises concrete and longitudinal steel bars, distribution steel bars, annular steel bars and trumpet-shaped steel bars therein, the longitudinal steel bars comprise upper steel bars and lower steel bars, the upper steel bars are pre-embedded in the concrete support at a position where they collide and interfere with the longitudinal steel bars of the pile foundation dustpan opening and extend upwards to be embedded in the raft slab, the bottom of the concrete support collides and interferes with the longitudinal steel bars of the pile foundation dustpan opening An embedded part is embedded in the position and the position where the side of the concrete support collides and interferes with the distributed steel bars of the pile foundation dustpan mouth, and a rear steel plate is vertically welded on each of the embedded parts. The lower steel bars of the longitudinal steel bars of the pile foundation dustpan mouth are welded to the rear steel plate at the bottom of the concrete support, so that the upper steel bars are connected to the lower steel bars through the embedded parts and the rear steel plate at the corresponding positions, and the distributed steel bars on the upper part of the pile foundation dustpan mouth are welded to the rear steel plates on both sides of the concrete support, so that the distributed steel bars on the upper part of the pile foundation dustpan mouth are connected to the concrete support.

2. The construction structure of the collision between the pile foundation dustpan mouth steel bars and the embedded support on the raft slope in the foundation pit according to claim 1, characterized in that: The transverse bending section of the lower steel bar passes through the raft slope and is embedded in the raft, the distribution steel bar passes through the raft slope and is embedded in the raft, and the trumpet-shaped steel bar that collides and interferes with the raft slope position passes through the raft slope and is embedded in the raft.

3. The construction structure of the collision between the pile foundation dustpan mouth steel bars and the embedded support on the raft slope in the foundation pit according to claim 1, characterized in that: The annular reinforcement is anchored in the concrete support.

4. The construction structure for collision between the pile foundation dustpan mouth steel bars and the embedded support on the raft slope in the foundation pit according to claim 1, characterized in that: The embedded part includes an anchor plate and anchor bars thereon, the anchor bars are embedded in the concrete support and welded to the skeleton steel bars in the concrete support, and the anchor plate is at least partially exposed on the surface of the concrete support.

5. The construction structure for collision between the pile foundation dustpan steel bars and the embedded support on the raft slope in the foundation pit according to claim 1, characterized in that: The upper steel bars and the lower steel bars are aligned and distributed in the vertical direction.

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