Resistance barrel and method for detecting static loads of engineering pile foundations

Abstract

The invention discloses a resistance barrel and a method for detecting static loads of engineering file foundations. The resistance barrel is characterized by comprising a resistance barrel body, resistance rod plates, propulsion devices and thrust rods; the resistance rod plates and the propulsion devices are arranged in the resistance barrel body and are connected with one another by the thrust rods, holes are formed in the resistance barrel body, the resistance rod plates can be pushed by the propulsion devices to horizontally move along the holes, also can be arranged on the outer side surface of the resistance barrel body, and are drilled into an underground rock and soil layer adjacent to the outer side of the resistance barrel body to enhance upward anti-shifting resistance of the resistance barrel body after the resistance rod plates extend out of the holes of the resistance barrel body or are spread on the outer side surface of the resistance barrel body, and loads can be applied to ground transverse beam counterforce devices via oil jacks by the aid of the resistance barrel, so that static load detection tests can be carried out on the pile foundations. The resistance barrel and the method for detecting the static loads of the engineering pile foundations have the advantages that the resistance barrel is reasonable in structural design and can be operated easily and conveniently, the work efficiency and the safety can be obviously improved during the static load detection tests on the pile foundations, and the like.

Description

technical field [0001] The invention relates to a resistance cylinder, which is a resistance cylinder and a detection method specially used for carrying out static load detection tests on pile foundations of construction projects. Background technique [0002] With the increase of high-rise buildings, the application of pile foundations will increase, which will also put forward higher requirements for pile foundations; in addition, for geotechnical engineering, pile foundations play a vital role, and with the The continuous development of geotechnical engineering will also put forward higher requirements for pile foundations. No matter what kind of pile foundation is used, in order to avoid or reduce pile foundation problems, relevant codes stipulate that a certain number of pile foundation load tests must be done to determine the ultimate bearing capacity of a single pile of pile foundation. [0003] At present, most of the methods used in the static load testing of pile ...

AI Technical Summary

Problems solved by technology

The main problems of its existence are: 1. The ballast method must solve the load source, stacking and transportation problems of hundreds of tons or even thousands of tons. The anchor pile method must be provided with multiple anchor piles and reaction girders. The multiple anchor piles not only The cost is expensive, the maintenance time is long, and it is easily limited by the tonnage and site conditions; 2. The large-volume concrete blocks required by the ballast method often slip during the testing process due to the lack of effective enclosure protection and the overall collapse of the ballast body, resulting in production safety accidents such as casualties of on-site inspection staff. At the same time, the ballast inspection method has problems such as installation and disassembly of various components, and a long time for inspection and test implementation; 3. During the test process, the anchor pile method Excessive loading pressure may cause the welded joint between the anchor pile and the main reinforcement of the anchor pile head to crack or be broken, which will directly cause the reaction frame combined with the steel beam and the anchor pile to collapse, which will not only affect the jack and the displacement Sensors and other related detection instruments are damaged, and it will also pose hidden dangers to the safety of test personnel.