Prestressed pipe pile bearing platform structure for soft soil foundation

Abstract

The utility model provides a prestressed pipe pile bearing platform structure for a soft soil foundation, which belongs to the technical field of constructional engineering and comprises a cushion layer and stabilizing columns fixedly connected to the bottom wall of the cushion layer, the bottom wall of the cushion layer is fixedly connected with the uniformly distributed stabilizing columns, the top wall of the cushion layer is provided with uniformly distributed groove bodies, and the inner wall of the cushion layer is provided with a permeation groove. The top wall of the cushion layer is fixedly connected with the bearing platform body, the top wall of the bearing platform body is connected with the resistance increasing component used for improving the structural stability, the bearing capacity of the cushion layer can be improved by inserting the stabilizing columns into soft soil, and therefore the load of the upper structure is transmitted to a deeper soil body or a hard stratum; the firmness of connection between the bearing platform body and the cushion layer can be improved under the action of the groove body and the permeation groove, the steel frame can penetrate into the shear-resistant groove, and the safety after the steel frame is connected with the whole structure can be improved by pouring concrete into the shear-resistant groove.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a prestressed pipe pile cap structure for soft soil foundation. Background Art

[0002] At present, in the field of construction engineering, prestressed pipe piles are a more common form of pile foundation. Because they can be manufactured in factories, the cost is economical and reasonable, and the on-site construction is fast, they are widely used in engineering construction.

[0003] After searching, Chinese patent application number 202220463436.4 discloses a prestressed pipe pile cap structure for soft soil foundation, comprising prefabricated pipe piles, a cap, and a steel frame. The cap is located on top of the prefabricated pipe piles and is used to bear and distribute the load generated by the superstructure. A shear groove is provided at the center of the top of the cap. The steel frame is fixedly connected to the cap through the shear groove at the top of the cap.

[0004] Although the above patent can give full play to the performance of prestressed pipe piles and pedestals constructed in soft soil foundations and provide a good foundation for subsequent construction, there are still the following deficiencies during use: 1. Under soft soil foundation construction conditions, the cushion layer is prone to significant settlement after contact with the soft soil, which directly leads to insufficient stability of the overall structure. In addition, since the cushion layer and the load-bearing structure are cast in batches, the connection strength between the two is weak, which further affects the stability of the structure; 2. The steel frame is connected to the pedestal through shear grooves and fixed with anchor bolts. However, if the anchor bolts are not firmly tightened, they may loosen or even fall off under load, thereby seriously affecting the connection stability between the steel frame and the pedestal and the safety of the overall structure.

[0005] Therefore, there is an urgent need for a prestressed pipe pile cap structure for soft soil foundation to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a prestressed pipe pile cap structure for soft soil foundation, so as to solve the problems raised in the above background technology.

[0007] In order to achieve the above-mentioned purpose of the invention, the present invention provides the following technical solutions:

[0008] A prestressed pipe pile pedestal structure for soft soil foundation includes a cushion layer, characterized in that the bottom wall of the cushion layer is fixedly connected to a plurality of evenly distributed stabilizing columns, the top wall of the cushion layer is provided with a plurality of evenly distributed troughs, the inner wall of the cushion layer is provided with a plurality of evenly distributed penetration grooves, the top wall of the cushion layer is fixedly connected to a pedestal body, and the top wall of the pedestal body is connected to a resistance-increasing component for improving structural stability.

[0009] As a preferred technical solution of the present application, the bottom wall of the support body is fixedly connected with a number of evenly distributed infiltration columns, the bottom wall of the support body is provided with a number of protrusions that cooperate with the trough body, and the infiltration columns are used in conjunction with the infiltration trough.

[0010] As a preferred technical solution of the present application, the resistance-increasing component includes a soil layer groove opened on the top wall of the base body, and the bottom wall of the soil layer groove is provided with a shear groove.

[0011] As a preferred technical solution of the present application, the side walls of the shear groove are provided with a plurality of evenly distributed resistance-increasing grooves.

[0012] As a preferred technical solution of the present application, a plurality of evenly distributed vibration grooves are provided on the bottom wall of the soil layer groove, and a steel frame is connected to the inner wall of the shear groove.

[0013] In the scheme of this application:

[0014] 1. Stabilizing columns can be inserted into soft soil to increase the bearing capacity of the cushion layer, thereby transferring the load of the superstructure to deeper soil or hard strata, thereby reducing foundation settlement and improving structural stability. The trough and infiltration grooves can also improve the connection between the base and cushion layer. This solves the problem in the prior art that, under soft soil foundation construction conditions, the cushion layer is prone to significant settlement after contact with the soft soil, which directly leads to insufficient overall structural stability. In addition, since the cushion layer and the bearing structure are cast in stages, the connection strength between the two is weak, further affecting the stability of the structure.

[0015] 2. The steel frame can penetrate deep into the shear groove, and by pouring concrete into the shear groove, it is beneficial to improve the stability of the connection between the steel frame and the overall structure, solving the problem in the prior art that the steel frame is connected to the base through the shear groove and fixed with anchor bolts. However, if the anchor bolts are not firmly tightened, they may become loose or even fall off under the action of load, thereby seriously affecting the connection stability between the steel frame and the base and the safety of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is one of the overall structural schematic diagrams of a prestressed pipe pile cap structure for soft soil foundation provided by this application;

[0017] Figure 2 This is the second overall structural schematic diagram of a prestressed pipe pile cap structure for soft soil foundation provided by this application;

[0018] Figure 3 A schematic diagram of the explosion structure of a prestressed pipe pile cap structure for soft soil foundation provided in this application;

[0019] Figure 4 A schematic diagram of a partial structure of a prestressed pipe pile cap structure for soft soil foundation provided in this application;

[0020] Figure 5 The present application provides a prestressed pipe pile cap structure for soft soil foundation. Figure 3 A magnified view of the structure at point A;

[0021] Figure 6 The present invention provides a prestressed pipe pile cap structure for soft soil foundation. Figure 3 A magnified view of the structure at point B.

[0022] Indicated in the figure:

[0023] 100. Cushion layer; 101. Stabilizing column; 102. Trough body; 103. Infiltration trough; 104. Capping body; 105. Infiltration column; 110. Soil layer trough; 111. Shear trough; 112. Resistance-enhancing trough; 113. Vibrating trough; 114. Steel frame. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them.

[0025] like Figure 1-6 As shown, the present embodiment proposes a prestressed pipe pile pedestal structure for soft soil foundation, comprising a cushion layer 100, the bottom wall of the cushion layer 100 is fixedly connected with a plurality of evenly distributed stabilizing columns 101, the top wall of the cushion layer 100 is provided with a plurality of evenly distributed grooves 102, the inner wall of the cushion layer 100 is provided with a plurality of evenly distributed penetration grooves 103, the top wall of the cushion layer 100 is fixedly connected with a pedestal body 104, the top wall of the pedestal body 104 is connected with a resistance-increasing component for improving the stability of the structure, and the firmness of the connection between the pedestal body 104 and the cushion layer 100 can be improved by providing the grooves 102 and the penetration grooves 103.

[0026] like Figure 1-2 As shown, as a preferred embodiment, on the basis of the above method, further, the bottom wall of the base body 104 is fixedly connected with a plurality of evenly distributed infiltration columns 105, the bottom wall of the base body 104 is provided with a plurality of protrusions that cooperate with the trough body 102, and the infiltration columns 105 are used in conjunction with the infiltration trough 103, and the shear resistance after pouring is further improved through the action of the infiltration columns 105.

[0027] like Figure 1-4As shown, as a preferred embodiment, on the basis of the above method, the resistance-increasing component further includes a soil layer groove 110 opened on the top wall of the base body 104, and the bottom wall of the soil layer groove 110 is provided with a shear groove 111. Through the action of the soil layer groove 110, the pouring of fine stone concrete can be more conveniently achieved.

[0028] like Figure 1-5 As shown, as a preferred embodiment, on the basis of the above method, further, the side wall of the shear groove 111 is provided with a plurality of evenly distributed resistance-increasing grooves 112, which facilitate improving the integrity after casting and molding through the action of the resistance-increasing grooves 112.

[0029] like Figure 1-6 As shown, as a preferred embodiment, on the basis of the above method, further, a plurality of evenly distributed vibration grooves 113 are opened on the bottom wall of the soil layer groove 110, and the inner wall of the shear groove 111 is connected with a steel frame 114. By setting the vibration groove 113, the concrete inside the shear groove 111 can be poured and vibrated more conveniently, which is beneficial to improving the pouring quality.

[0030] Specifically, when using the prestressed pipe pile foundation structure for soft soil foundation: first, the cushion layer 100 and the stabilizing column 101 are cast by casting a template, so that the cushion layer 100 and the stabilizing column 101 are formed at one time. After the casting is completed, a template plate is placed on the surface of the cushion layer 100 so that a groove body 102 is reserved on the surface of the cushion layer 100, and an infiltration groove 103 is opened inside the groove body 102. When the cushion layer 100 solidifies, the template plate is removed, and then the foundation body 104 is cast on the surface of the cushion layer 100. The foundation body 104 improves the firmness of the connection with the cushion layer 100 under the action of the infiltration groove 103 and the groove body 102. When casting the foundation body 104, the soil is pre-stressed in advance by placing the corresponding template. The layer groove 110, the shear groove 111 and the resistance-increasing groove 112 are reserved, and then the steel frame 114 is placed in the shear groove 111 and fixed, and then the corresponding concrete is poured into the shear groove 111 through the vibration groove 113, and then the vibrator is inserted into the shear groove 111 through the vibration groove 113 to fully vibrate the concrete, so as to prevent the occurrence of voids, which is beneficial to improve the firmness of the connection between the steel frame 114 and the base body 104, and then when the concrete in the shear groove 111 solidifies, concrete is poured into the soil layer groove 110 for the second time. The reserved soil layer groove 110 can prevent the fine stone concrete from flowing out from the surface of the base body 104 when pouring, which is beneficial to improve the convenience during pouring.

[0031] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A prestressed pipe pile cap structure for soft soil foundation, comprising a cushion layer (100), characterized in that: The bottom wall of the cushion layer (100) is fixedly connected to a plurality of evenly distributed stabilizing columns (101), the top wall of the cushion layer (100) is provided with a plurality of evenly distributed grooves (102), the inner wall of the cushion layer (100) is provided with a plurality of evenly distributed infiltration grooves (103), the top wall of the cushion layer (100) is fixedly connected to a support body (104), and the top wall of the support body (104) is connected to a resistance-increasing component for improving structural stability.

2. The prestressed pipe pile cap structure for soft soil foundation according to claim 1, characterized in that: The bottom wall of the support body (104) is fixedly connected with a plurality of evenly distributed infiltration columns (105), the bottom wall of the support body (104) is provided with a plurality of protrusions that match the groove body (102), and the infiltration columns (105) are used in conjunction with the infiltration groove (103).

3. The prestressed pipe pile cap structure for soft soil foundation according to claim 1, characterized in that: The resistance-increasing component comprises a soil layer groove (110) provided on the top wall of the support platform (104), and a shear-resistant groove (111) is provided on the bottom wall of the soil layer groove (110).

4. The prestressed pipe pile cap structure for soft soil foundation according to claim 3, characterized in that: The side wall of the shear-resistant groove (111) is provided with a plurality of evenly distributed resistance-increasing grooves (112).

5. The prestressed pipe pile cap structure for soft soil foundation according to claim 4, characterized in that: The bottom wall of the soil layer groove (110) is provided with a plurality of evenly distributed vibration grooves (113), and the inner wall of the shearing groove (111) is connected with a steel frame (114).

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