CN101117801A - Composite pile for engineering reconstruction and pile forming method - Google Patents

Abstract

The invention relates to a composite pile for engineering transformation and a method for forming the pile, which relates to a reinforced pile for engineering transformation and a method for forming the pile. It solves the problem that the strengthening method needs to increase the number of piles and add caps to reinforce the original pile foundation, and the overall performance is poor. The longitudinal reinforcement (3), peripheral annular stirrup (4) and peripheral annular concrete (2) of the present invention are arranged around the outer surface of the original pile (1) along the length direction of the original pile (1) to form a superimposed pile. The steps of the method are as follows: 1. unload the original pile; 2. remove the soil around the unloaded original pile (1), and then ream the holes around the original pile (1); 3. The longitudinal reinforcement (3) and the annular stirrup (4) are arranged in the holes around the original pile (1) in the length direction; 4. Pour concrete (2) into the hole to form a composite pile. The invention is applicable to the reinforcement and transformation of the pile foundation of the original building where each column corresponds to a pile and directly adds layers. The method of the invention is simple and convenient, can improve work efficiency, and has strong bearing capacity of the pile.

Description

Composite pile for engineering reconstruction and pile forming method

technical field

The invention relates to a reinforced concrete pile and a pile forming method in the field of civil engineering, in particular to an engineering transformation reinforced pile and a pile forming method thereof.

Background technique

At present, for the original structure where one column corresponds to one pile, when the load of the structure requiring the original pile increases (that is, when the original building is added), the resistance of the original pile foundation is insufficient, and not only the original building needs to be The upper structure of the pile is reinforced, and the existing reinforcement needs to increase the number of piles and add caps to reinforce the original pile foundation. This method is cumbersome in construction, increases in raw materials, and poor overall performance.

Contents of the invention

In order to solve the problem that the existing reinforcement method needs to increase the number of piles and add caps to reinforce the original pile foundation, the construction is cumbersome, the raw materials are increased, and the overall performance is poor, the invention proposes a composite pile for engineering transformation and its pile forming method , the specific technical scheme to solve the above problems is as follows:

The invention is composed of original pile, peripheral annular concrete, longitudinal reinforcement and peripheral annular stirrup. The longitudinal reinforcement, peripheral annular stirrup and peripheral annular concrete are arranged around the outer surface of the original pile along the length direction of the original pile to form a superimposed pile.

The steps of pile-forming method of the present invention are as follows:

Step 1: Set up a strip foundation between two adjacent columns, and pour (build) a wall on the strip foundation, so that the load borne by the original pile is transmitted to the strip foundation;

Step 2. According to the design size of the superimposed pile, remove the soil around the unloaded original pile, and then ream the hole around the original pile. The depth of the reaming hole is the depth of the original pile, and expand the size of the bottom of the pile; expand the size of the head The thickness of the superimposed ring around the pile is determined according to the load required by the renovation project;

Step 3, in the superimposed ring cavity around the reamed original pile, arrange the longitudinal reinforcement and the annular stirrup around the original pile along the length direction of the original pile to form a laminated layer reinforcement skeleton;

Step 4: Pour concrete into the superimposed annular cavity around the original pile formed in step 2 and the superimposed steel skeleton, to form the superimposed pile of the present invention.

The invention is applicable to the reinforcement and transformation of the pile foundation of the original building where each column corresponds to a pile and directly adds layers. The method of the invention is simple, can improve work efficiency, save raw materials, and has good overall performance of the pile. The invention is widely applicable to engineering reconstruction pile foundation reinforcement engineering.

Description of drawings

Fig. 1 is a schematic diagram of the superimposed part of the superimposed pile foundation of the present invention and the length direction structure of the original pile 1 foundation, and Fig. 2 is a cross-sectional view of A-A of Fig. 1 . Among the figure, 5 is the widening part of the original pile 1 foundation, 6 is the bottom of the original pile foundation, 7 is the bottom of the superimposed pile foundation, and 8 is the hole enlarged to the original foundation.

Detailed ways

Specific Embodiment 1: This embodiment is described in conjunction with Fig. 1 and Fig. 2. This embodiment is composed of the original pile 1, the peripheral annular concrete 2, the longitudinal reinforcement 3 and the peripheral annular stirrup 4, the longitudinal reinforcement 3, the peripheral annular stirrup 4 and The peripheral annular concrete 2 is arranged around the outer surface of the original pile 1 along the length direction of the original pile 1 to form a composite pile.

Specific embodiment two: the steps of this embodiment method are as follows:

Step 1: Set up a strip foundation between two adjacent columns, and pour (build) a wall on the strip foundation, so that the load borne by the original pile is transmitted to the strip foundation;

Step 2. According to the design size of the superimposed pile, the soil around the unloaded original pile 1 is removed, and then the surrounding of the original pile 1 is reamed. The depth of reaming is the depth of the original pile 1, and the size of the bottom of the pile is enlarged; The size of the enlarged head and the thickness of the superimposed ring around the pile are determined according to the load required by the renovation project;

Step 3, in the superimposed annular cavity around the reamed original pile 1, arrange the longitudinal reinforcement 3 and the annular stirrup 4 around the original pile 1 along the length direction of the original pile 1 to form a superimposed layer reinforcement skeleton;

Step 4: Pour concrete 2 into the superimposed ring cavity around the original pile 1 formed in step 2 and form the superimposed steel skeleton, that is, to form the superimposed pile of the present invention.

After the superimposed pile can effectively carry the load, the post-cast (masonry) wall between two adjacent columns is removed, so that the reinforced superposed pile can resume bearing.

Claims (2)

1. Composite pile for engineering transformation, which is composed of original pile (1), peripheral annular concrete (2), longitudinal reinforcement (3) and peripheral annular stirrup (4), and is characterized in that longitudinal reinforcement (3), peripheral annular Stirrups (4) and peripheral annular concrete (2) are fixed around the outer surface of the original pile (1) along the length direction of the original pile (1) to form a composite pile. 2. The pile-forming method of composite pile for engineering transformation as claimed in claim 1 is characterized in that the steps of the method are as follows: Step 1. Set up a strip foundation between two adjacent columns, and pour a wall on the strip foundation, so that the load borne by the original pile is transmitted to the strip foundation; Step 2. According to the design size of the superimposed pile, the soil around the unloaded original pile (1) is removed, and then the surrounding of the original pile (1) is reamed, and the reaming depth is the depth of the original pile (1). Expand the size of the bottom of the pile; Step 3: In the superimposed annular cavity around the reamed original pile (1), arrange the longitudinal reinforcement (3) and annular stirrup (4) around the original pile (1) along the length direction of the original pile (1) , forming a composite layer reinforcement skeleton; Step 4: Pour concrete (2) into the superimposed ring cavity around the original pile (1) formed in step 2 and the superimposed steel skeleton, to form the superimposed pile of the present invention.

Images