Construction method for uplift pile

Abstract

The objective of the invention is to provide a construction method for uplift piles. A detection uplift pile capable of providing a high pulling resistance can be formed fast and easily by the method. The construction method comprises the following steps of: 1) sinking outer tubes provided with a hollow steel tube on the inner wall to a designed depth; 2) putting an internal hammer in the outer tubes and hitting the internal hammer out of the outer tubes; 3) filling in the outer tubes with granular filling material in several times and squeezing the filled granular filling material with the internal hammer; 4) filling in the outer tubes with dry rapid-hardening concrete in several times and squeezing the filled dry rapid-hardening concrete with the internal hammer; 5) inserting steel bars separately into the outer tubes through the hollow steel tubes inside the outer tubes; 6) putting an inner tube in the outer tubes and an internal hammer in the inner tubes, and connecting the inner tubes with the internal hammers; 7) filling in the outer tubes with dry rapid-hardening concrete and squeezing the filled dry rapid-hardening concrete by hammering the inner tubes; 8) filling and squeezing repeatedly so as to make the steel bars spread outward and be wrapped and embedded in the dry rapid-hardening concrete; 9) perfusing granular material in the outer tubes; 10) using a steel connecting plate to fix the steel bars and a dowel steel of testing equipment with bolts separately; and 11) recycling the steel connecting plate and steel bars.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to the construction technology of piles. Background technique [0002] In the pile foundation of a building, when the pile foundation is constructed, it is necessary to carry out a static load test to detect the bearing capacity of the pile foundation. Nowadays, the common method of static load test is to provide load pressure in the form of stacked counterweight, which requires a large mass such as steel blocks, sandbags and other counterweights. The transportation costs are high, and the process of stacking and unloading takes a long time , it is very troublesome to complete the test detection of a certain number of piles. The static load test is also carried out by means of uplift piles, but the currently commonly used uplift piles provide a small reaction force by a single pile, so it has to be compensated by increasing the number of uplift piles, which is time-consuming, labor...

AI Technical Summary

Problems solved by technology

The static load test is also carried out by means of uplift piles, but the currently commonly used uplift piles provide a small reaction force by a single pile, so it has to be compensated by increasing the number of uplift piles, which is time-consuming, laborious, and expensive

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