CN218540678U

CN218540678U - Bottom die for PHC pipe pile core dowel bar

Info

Publication number: CN218540678U
Application number: CN202221730662.0U
Authority: CN
Inventors: 张晨; 潘宏亮; 欧宁; 陈港; 罗利彬
Original assignee: Shanghai Baoye Group Corp Ltd
Current assignee: Shanghai Baoye Group Corp Ltd
Priority date: 2022-07-07
Filing date: 2022-07-07
Publication date: 2023-02-28
Anticipated expiration: 2032-07-07

Abstract

The utility model discloses a bottom die for PHC tubular pile core dowel bars, which is characterized in that a cushion layer and a fine stone concrete layer are sequentially arranged from the bottom of the tubular pile core to the top; the elevation of the top of the cushion layer is 8-15 cm lower than that of the bottom die; and the fine stone concrete layer is used as the support of the pile core dowel bars, and the casting elevation of the fine stone concrete layer is consistent with that of the bottom die. The utility model well solves the problem that the steel plate bottom die is difficult to place to the designed elevation position of the drawing due to the unevenness of the inner wall of the pile; the construction process is simple, the construction period is saved, and the construction quality is improved; the related materials are universal and easy to obtain, and the construction cost is low; the concrete bottom die has large bearing capacity and strong operability.

Description

Bottom die for PHC pipe pile core dowel bar

Technical Field

The utility model relates to a PHC tubular pile construction technical field, more specifically relates to a die block of PHC tubular pile stake core dowel.

Background

The PHC pipe pile, i.e. prestressed high-strength concrete pipe pile, is made into a hollow cylindrical concrete prefabricated component by adopting a pre-tensioning and pre-stressing centrifugal forming process and carrying out steam curing at about 180 ℃ under 10 atmospheric pressures. The PHC pipe pile is widely used in modern building engineering.

In the PHC tubular pile construction process, a steel plate bottom die is usually adopted as a support of a pile core dowel bar, but the steel plate bottom die meeting the elevation requirement is not easy to place due to the fact that the inner wall of the pile is uneven, and the phenomenon of difficult construction is caused. The steel plate bottom die is put into the pile according to the design requirement to become a great difficulty in the pipe pile construction engineering.

Therefore, it is an urgent technical problem to develop a bottom die for a new PHC tubular pile core dowel bar, which is convenient to implement and can replace a steel plate bottom die.

SUMMERY OF THE UTILITY MODEL

Because prior art has above-mentioned defect, the utility model provides a die block of PHC tubular pile stake core dowel steel to solve because stake inner wall unevenness phenomenon leads to the steel sheet die block to be difficult to place the problem of drawing design elevation position.

In order to achieve the above object, the utility model provides a bottom die of PHC tubular pile stake core dowel steel, its characterized in that: the pipe pile comprises a cushion layer and a fine stone concrete layer from the bottom of the pipe pile core to the top in sequence; the elevation of the top of the cushion layer is 8-15 cm lower than that of the bottom die; and the fine stone concrete layer is used as the support of the pile core dowel bar, and the pouring elevation of the fine stone concrete layer is consistent with the elevation of the bottom die.

And during construction of the bottom die, constructing the cushion layer firstly, and pouring a fine stone concrete layer to the elevation of the bottom die after the elevation of the top of the cushion layer meets the requirement. And after the concrete reaches the strength, placing pile core dowel bars and carrying out subsequent construction. The technical scheme that the steel plate bottom die is replaced by the fine aggregate concrete successfully solves the problem that the steel plate bottom die is difficult to place to the designed elevation position of the drawing, not only effectively improves the construction progress, but also greatly saves the construction cost and ensures the construction quality.

Preferably, the cushion layer is a sand bag formed by filling sand into a plastic bag, and the diameter of the sand bag is slightly larger than the inner diameter of the tubular pile.

Preferably, the opening of the sand bag is tied tightly and suspended to the bottom surface of the pile core of the tubular pile for compaction.

Preferably, the cushion layer is a graded crushed stone layer.

Preferably, a non-woven geotextile reversed filter layer is laid on the graded gravel layer.

Compared with the prior art, the utility model has following advantage or beneficial effect:

(1) The construction process is simple, the construction period is saved, and the construction quality is improved;

(2) The related materials are universal and easy to obtain, and the construction cost is low;

(3) The concrete bottom die has large bearing capacity and strong operability;

(4) Is suitable for the construction of various tubular piles and has wide application range.

The utility model provides a bottom die for PHC tubular pile core dowel bars, which is characterized in that a cushion layer and a fine stone concrete layer are sequentially arranged from the bottom of the tubular pile core to the top; the elevation of the top of the cushion layer is 8-15 cm lower than that of the bottom die; and the fine stone concrete layer is used as the support of the pile core dowel bar, and the pouring elevation of the fine stone concrete layer is consistent with the elevation of the bottom die. The utility model well solves the problem that the steel plate bottom die is difficult to place to the designed elevation position of the drawing due to the unevenness of the inner wall of the pile; the construction process is simple, the construction period is saved, and the construction quality is improved; the related materials are universal and easy to obtain, and the construction cost is low; the concrete bottom die has large bearing capacity and strong operability.

Drawings

The invention and its features, aspects and advantages will become more apparent from a reading of the following detailed description of non-limiting embodiments with reference to the attached drawings. Like reference symbols in the various drawings indicate like elements. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention.

Fig. 1 is a schematic cross-sectional view of the present invention;

wherein, 1 is the bed course, 2 is fine stone concrete layer, 3 is PHC tubular pile, 4 is the stake core dowel, 5 is the core concrete that fills.

Detailed Description

The structure of the present invention will be further described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.

Example 1

As shown in fig. 1, a bottom die for a PHC tubular pile core dowel bar sequentially comprises a cushion layer 1 and a fine stone concrete layer 2 from the bottom of a pile core of a tubular pile 3 to the top; the elevation of the top of the cushion layer 1 is 10cm lower than that of the bottom die; and the fine stone concrete layer 2 is used as the support of the pile core dowel bar, and the pouring elevation of the fine stone concrete layer is consistent with the elevation of the bottom die. In this embodiment, cushion 1 is the sand bag that the sand formed is filled to the plastic bag, the sand bag diameter slightly is greater than the internal diameter of tubular pile. The fine stone concrete layer 2 is formed by pouring C20 fine stone concrete.

During the die block construction, will earlier sand bag oral area is tied up, suspends in midair extremely 3 stake core bottom surfaces of tubular pile carry out the compaction, and sand bag top elevation is than the low 10cm of the elevation of steel sheet die block, behind the error of elevation nuclear, pours 10cm pea gravel concrete and as the support of stake core dowel, after treating the concrete and reaching intensity, places stake core dowel 4 to follow-up construction of filling out core concrete 5.

Example 2

The bottom die of the PHC tubular pile core dowel steel is similar to the structure of the PHC tubular pile core dowel steel in the embodiment 1. In contrast to example 1, the cushion layer 1 is a graded crushed stone layer. The elevation of the top of the cushion layer 1 is 8cm lower than that of the bottom die, and 8cm fine stone concrete is poured to serve as a support of the pile core dowel; and laying a non-woven geotextile inverted filter layer on the graded broken stone layer, and then pouring the fine stone concrete layer.

Example 3

The bottom die of the PHC tubular pile core dowel steel is similar to the structure of the PHC tubular pile core dowel steel in the embodiment 1. Different from the embodiment 1, the elevation of the top of the cushion layer 1 is 15cm lower than that of the bottom die, and 15cm of fine aggregate concrete is poured to serve as the support of the pile core dowel.

To sum up, the utility model provides a bottom die for PHC tubular pile core dowel bars, which is characterized in that a cushion layer and a fine stone concrete layer are sequentially arranged from the bottom of the tubular pile core to the top; the elevation of the top of the cushion layer is 8-15 cm lower than that of the bottom die; and the fine stone concrete layer is used as the support of the pile core dowel bar, and the pouring elevation of the fine stone concrete layer is consistent with the elevation of the bottom die. The utility model well solves the problem that the steel plate bottom die is difficult to place to the designed elevation position of the drawing due to the unevenness of the inner wall of the pile; the construction process is simple, the construction period is saved, and the construction quality is improved; the related materials are universal and easy to obtain, and the construction cost is low; the concrete bottom die has large bearing capacity and strong operability.

It should be understood by those skilled in the art that the above embodiments may be combined with the prior art to realize the modifications, and the detailed description is omitted here. Such variations do not affect the essence of the present invention, and are not described herein.

The above description is directed to the preferred embodiment of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that devices and structures not described in detail are understood to be implemented in a manner common in the art; without departing from the scope of the invention, it is intended that the present invention shall not be limited to the above-described embodiments, but that the present invention shall include all the modifications and variations of the embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a die block of PHC tubular pile stake core dowel which characterized in that: the pipe pile comprises a cushion layer (1) and a fine stone concrete layer (2) from the bottom of a pile core of the pipe pile (3) to the top in sequence; the elevation of the top of the cushion layer (1) is 8-15 cm lower than that of the bottom die; and the fine stone concrete layer (2) is used as the support of the pile core dowel steel, and the pouring elevation of the fine stone concrete layer is consistent with the elevation of the bottom die.

2. The bottom die of PHC tubular pile core dowel steel according to claim 1, characterized in that, the bed course (1) is a sand bag formed by filling sand into a plastic bag, and the diameter of the sand bag is slightly larger than the inner diameter of the tubular pile.

3. The bottom die of PHC tubular pile core dowel steel according to claim 1, characterized in that the cushion layer (1) is a graded crushed stone layer.

4. The bottom die of PHC tubular pile core dowel steel of claim 3, characterized in that a non-woven geotextile reversed filter layer is laid on the graded gravel layer.

5. The bottom die for the dowel of the pile core of the PHC tubular pile according to claim 1, wherein the concrete strength grade of the fine stone concrete layer (2) is C20.