Pile head stub rod connecting device used for foundation pile bearing capacity static test

Abstract

The invention relates to an anchorage pile or tension pile head stub rod connecting device suitable for the foundation pile bearing capacity static test. The device comprises a conversion connector arranged on the pile head, a through hole allowing a pile head stub rod to penetrate is formed in the conversion connector, the portion, stretching to the upper side of the conversion connector, of the pile head stub rod forms a clamping part, a bolt hole used for being matched with a tension rod is formed in the conversion connector, and the device further comprises a clamp fixedly arranged on the clamping part. Tedious construction procedures of welding and the like of the pile head stub rod can be avoided, filed mounting and detaching are convenient, and the device is beneficial to improvement of the test result precision. Meanwhile, erecting and detaching efficiency of a foundation pile test platform is improved, and the safe stability of the test platform can be effectively ensured.

Description

technical field [0001] The invention belongs to the technical field of static load test of foundation pile bearing capacity, and in particular relates to a pile head protruding steel bar connection device suitable for anchor piles or uplift piles in the static load test of foundation pile bearing capacity. Background technique [0002] Pile foundation is the most widely used foundation form in China, and its engineering quality directly affects the safety of the superstructure. The static load test of foundation pile bearing capacity is to apply continuous load step by step on the top of the test pile, and record the relationship between load, displacement and time, so as to analyze and determine the bearing capacity of a single pile. Therefore, the static load test of pile bearing capacity is an indispensable technical means to ensure the quality of the project. In most cases, the static load test of foundation pile bearing capacity is placed in the design and construction...

AI Technical Summary

Problems solved by technology

For the static load test reaction force provided by the anchor pile method, in the prior art, the main reinforcement cage of the anchor pile body is connected to the two ends of the steel beam by welding. This connection method not only has a large welding workload, but also takes a long time to set up the test platform. The efficiency is low, and the quality of on-site welding is difficult to guarantee, which may lead to asymmetric stress on the primary and secondary beams, affect the test accuracy, and seriously cause the test platform to be unstable and overturned, so it needs to be improved urgently

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