阅读说明：本技术 灌注桩桩头静态破除成孔-灌注一体化装置与使用方法 (Static breaking pore-forming and pouring integrated device for pile head of cast-in-place pile and using method ) 是由 孔德森 谭卜凡 关盛杰 齐睿 巩越 于 2021-10-12 设计创作，主要内容包括：本发明公开了一种灌注桩桩头静态破除成孔-灌注一体化装置,属于建筑施工领域,为解决桩头破除工程中的劈裂孔预留问题而设计。本发明由带有多个通透孔的金属圆盘、金属钢管、连接件、末端带有6分支的软管组成。所述的金属圆盘外径大小同待破除桩头的直径,盘身部共有6个竖向通透孔；所述的金属钢管为中空构件,顶部管壁内带有螺纹；所述的连接件是由一根外壁带有通长螺纹的短钢管、两个反向螺帽组成,将短钢管插入金属圆盘通透孔内,两个反向螺帽分别在其上下两端旋入,将其固定在金属圆盘上。该装置能够解决大批量灌注桩桩头静态劈裂孔的预留难题,并且可对单个桩头所有劈裂孔同时灌注劈裂剂,提高了桩头破除效率,具有很好的经济效益。(The invention discloses a static pile head breaking and pore-forming-pouring integrated device for a cast-in-place pile, belongs to the field of building construction, and is designed for solving the problem of splitting hole reservation in pile head breaking engineering. The invention consists of a metal disc with a plurality of through holes, a metal steel pipe, a connecting piece and a hose with 6 branches at the tail end. The outer diameter of the metal disc is the same as the diameter of the pile head to be broken, and the disc body part has 6 vertical through holes; the metal steel pipe is a hollow component, and the pipe wall at the top part is internally provided with threads; the connecting piece is composed of a short steel pipe with a through long thread on the outer wall and two reverse nuts, the short steel pipe is inserted into the through hole of the metal disc, and the two reverse nuts are screwed in the upper end and the lower end of the metal disc respectively to fix the metal disc. The device can solve the reservation difficult problem in the static splitting hole of big batch bored concrete pile head to can pour into the splitting agent simultaneously to all splitting holes of single pile head, improve the pile head and break efficiency, have fine economic benefits.)

1. The pile head static breaking pore-forming-pouring integrated device of the filling pile is characterized in that: the device consists of a metal disc with a plurality of through holes, 6 metal steel pipes, 6 connecting pieces and a hose with 6 branches at the tail end.

2. The metal disc of claim 1, wherein: the outer diameter of the disc is equal to the diameter of the pile head to be broken, and the disc body is provided with 6 vertical through holes.

3. The metal-steel pipe as claimed in claim 1, wherein: the steel pipe is a hollow component, the length of the steel pipe is 100mm less than the height of the pile head to be broken, the outer diameter of the steel pipe is 40mm, and the inner wall of the top pipe is provided with threads.

4. The connector as claimed in claim 1, which comprises a short steel pipe having a through long thread on its outer wall, and two reverse nuts, wherein the short steel pipe is inserted into the through hole of the metal disc, and the two reverse nuts are screwed into the upper and lower ends of the short steel pipe, respectively, to fix the short steel pipe to the metal disc; the short steel pipe has an outer diameter equal to the inner diameter of the metal steel pipe according to claim 3, and is connected to the short steel pipe in a bolt form.

5. The hose of claim 1, wherein: the tail end is provided with 6 branches which are respectively connected to the short steel pipes of the connecting piece, and the other end is a splitting agent injection opening.

Technical Field

The invention belongs to the field of building construction, and particularly relates to a static hole-forming-pouring breaking integrated device for a pile head of a pouring pile.

Background

The cast-in-place pile is an important basic form, has mature construction process and relatively low cost, and is widely applied to various civil engineering fields. The existing pile head breaking technology is often accompanied with noise and dust pollution, and the static splitting technology has unique advantages in rock and concrete breaking engineering due to friendly construction environment, so that the static splitting technology is a brand new technical scheme when being applied to the breaking of the pile head. When the pile head is broken by using the static splitting technology, in order to achieve the optimal breaking effect, a reasonable arrangement scheme of the splitting holes needs to be designed, and the splitting holes are finally formed. However, the method of drilling holes is adopted, so that the cost is too high; if holes are reserved by embedding PVC pipes and paper pipes in advance, the pipe fittings are difficult to pull out, if a splitting agent is directly poured into the pipeline, the phenomenon of spraying holes can occur due to poor heat dissipation or insufficient frictional resistance caused by smooth pipe walls, and the hole forming problem of the splitting holes limits the application of the static splitting technology in the breaking of the pile heads of the cast-in-place piles. In order to solve the problem, under the joint fundation of a Shandong province natural science foundation project (number: ZR2019MEE027) and a Shandong science and technology university 2021 national university college student innovation and entrepreneurship training project (number: 202110424152), a large amount of data collection, field investigation and related experiments are carried out for research. When the pile head needs to be broken, the metal steel pipe of the device is disassembled, and the upper metal disc and the connecting piece are utilized for grouting. The device can solve the reservation difficult problem in the static splitting hole of big batch bored concrete pile head to can improve pile head and break efficiency to 6 splitting holes of single pile head while pouring the splitting agent, can also guarantee engineering quality, have fine economic benefits.

Disclosure of Invention

The invention aims to provide a pile head static breaking pore-forming-pouring integrated device for a pouring pile, which is characterized in that after pouring concrete, the device is hoisted and inserted into the concrete, and after 3 hours, the initial setting of the concrete is finished, and the device is hoisted out; when the pile head begins to be broken, the metal steel pipe of the device is disassembled, and the splitting agent is poured by using the upper metal disc and the connecting piece. The device can solve the reservation difficult problem of the static splitting holes of the pile heads of the large-batch cast-in-place piles, can simultaneously cast splitting agents into 6 splitting holes of a single pile head, improves the pile head breaking efficiency, can also ensure the engineering quality, and has good economic benefit.

The technical scheme adopted by the invention is as follows: the pile head static breaking pore-forming-pouring integrated device for the filling pile consists of a metal disc with a plurality of through holes, a metal steel pipe, a connecting piece and a hose with 6 branches at the tail end. The outer diameter of the metal disc is equal to the diameter of the pile head to be broken, and the disc body is provided with 6 vertical through holes. The metal steel pipe is a hollow component, and the pipe wall at the top is internally provided with threads. The connecting piece consists of a short steel pipe with a through long thread on the outer wall and two reverse nuts, the short steel pipe is inserted into the through hole of the metal disc, and the two reverse nuts are screwed in the upper end and the lower end of the metal disc respectively to fix the metal disc with the two reverse nuts; the outer diameter of the short steel pipe is equal to the inner diameter of the metal steel pipe, and the short steel pipe can be connected with the metal steel pipe in a bolt mode. The hose is characterized in that: the tail end is provided with 6 branches which are respectively connected to the short steel pipes of the connecting piece, and the other end is a splitting agent injection opening.

The using method and the concrete construction steps of the invention are as follows.

The method comprises the following steps: and inserting the short steel pipe with the through long thread in the connecting piece into the through hole of the metal disc, and screwing reverse nuts into two ends of the short steel pipe respectively to fix the short steel pipe on the metal disc.

Step two: and aligning and screwing the threads on the inner wall of the top pipe of the metal steel pipe with the threads of the short steel pipe of the connecting piece, and sequentially connecting the rest metal steel pipes in the mode.

Step three: after concrete pouring is finished, the device is hoisted and pressed into the pile head.

Step four: and after waiting for 3 hours, hoisting the device and waiting for concrete curing.

Step six: after concrete curing is finished, the 6 metal steel pipes are disassembled, and then the 6 branches at the tail end of the hose are respectively connected with the other ends of the 6 connecting piece short steel pipes. And hoisting the pipe by using a hoisting device, aligning the short steel pipe in the connecting piece with the splitting hole formed by the pile head, and injecting the splitting agent into the splitting hole from the top of the hose by using a grouting pump.

The working principle of the invention is as follows: and the metal disc is used as a positioning base, and the metal steel pipe is used as an embedded part for forming the split hole. The connecting piece is a hollow short steel pipe, which has the connecting function and can be used as a channel of the splitting agent. The invention creatively solves the prominent effects of integral presetting and integral grouting of the splitting hole at the pile head part and promotes the application of the static splitting technology in the field of pile head breaking.

The invention has the beneficial effects that: the construction in the device can be disassembled, the whole presetting of the splitting hole at the pile head part can be realized, the outstanding effect of whole grouting can be realized, the operation is simple, the mechanization degree of the construction process is high, the application of the static splitting technology in the field of pile head breaking is promoted, and the process with high efficiency and low cost is provided for the difficult problem of the engineering boundary of pile head breaking.

Drawings

FIG. 1 is an elevation view of an integrated pore-forming and perfusion apparatus.

Fig. 2 is a schematic view of a connector.

Illustration of the drawings: (1) -a metal disc; (2) -a metal steel tube; (3) -a connector; (4) -a hose; (5) -short steel pipes with through long threads on the outer wall; (6) -a screw cap.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

The static pile head breaking and pore forming-pouring integrated device for the cast-in-place pile consists of a metal disc (1) with a plurality of through holes, a metal steel pipe (2), a connecting piece (3) and a hose (4) with 6 branches at the tail end. The outer diameter of the metal disc (1) is the same as the diameter of the pile head to be broken, and the total number of the disc body is 6 vertical through holes. The metal steel pipe (2) is a hollow component, and the pipe wall at the top is internally provided with threads. The connecting piece (3) consists of a short steel pipe (5) with a through long thread on the outer wall and two reverse nuts (6), the short steel pipe (5) is inserted into the through hole of the metal disc (1), and the two reverse nuts (6) are screwed in at the upper end and the lower end respectively and are fixed on the metal disc (1); the outer diameter of the short steel pipe (5) is equal to the inner diameter (2) of the metal steel pipe, and the short steel pipe can be connected with the metal steel pipe in a bolt mode. The hose (4) is characterized in that: the tail end is provided with 6 branches which are respectively connected to the short steel pipe (5) of the connecting piece, and the other end is a splitting agent injection opening.

The pile head static breaking pore-forming-pouring integrated device for the cast-in-place pile comprises the following specific construction steps.

The method comprises the following steps: and (3) inserting a short steel pipe (5) with a through long thread in the connecting piece (3) into the through hole of the metal disc (1), and screwing reverse nuts (6) into two ends of the short steel pipe respectively to fix the short steel pipe on the metal disc (1).

Step two: and aligning and screwing the threads of the inner wall of the top pipe of the metal steel pipe (2) with the threads of the short steel pipe (5) of the connecting piece, and sequentially connecting the rest metal steel pipes in the mode.

Step three: after concrete pouring is finished, the device is hoisted and pressed into the pile head.

Step four: and after waiting for 3 hours, hoisting the device and waiting for concrete curing.

Step six: after concrete curing is finished, the 6 metal steel pipes (2) are detached, and then the 6 branches at the tail end of the hose (4) are respectively connected with the other ends of the 6 connecting piece short steel pipes (5). The pipe is lifted by using a lifting device, the short steel pipe (5) in the connecting piece is aligned with the splitting hole formed by the pile head, and then the splitting agent is injected into the splitting hole from the top (4) of the hose through a mud jacking pump.