Passive pile model test system

A model test and passive pile technology, applied in the direction of applying stable tension/pressure to test material strength, measuring devices, instruments, etc., can solve problems such as low precision, uneven loading of lateral loading devices, and inability to simulate load forms, etc. To achieve the effect of improving project safety reserve and good flexibility
CN106769488APending Publication Date: 2017-05-31TIANJIN CHENGJIAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN CHENGJIAN UNIV
Publication Date
2017-05-31

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Abstract

The present invention provides a passive pile model test system comprising a model box, a moving sliding block, a pile pressing device, a vertical loading system, a lateral loading system, a data collecting system and a model pile, wherein a model groove internally provided with sandy soil is formed in the model box; the model pile is pressed into the sandy soil in the model groove by a vertical hydraulic jack; the moving sliding block is pushed by a lateral hydraulic jack; and the data collecting system is used for recording pile body test parameters for simulating a passive pile model test, that is, the passive pile model test system is formed. In the invention, by adopting the passive pile model test system, the basic shape of a pile base under lateral soil movement can be obtained, the measurement precision of soil displacement can reach 1 mm, the measurement precision of pile body displacement can reach 0.01 mm, the basic mechanical property of a pile base can be obtained well by improvement on precision, and the engineering safety capacity can be improved.
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Description

technical field

[0001] The invention belongs to the field of civil engineering model tests, in particular to a passive pile model test system. Background technique

[0002] Pile foundation is one of the most widely used foundation structures in land civil engineering. In actual engineering, pile foundations are often subjected to vertical loads or lateral loads. Due to the excavation and heap load of engineering construction projects, adjacent It is not uncommon for structures and pile foundations to be deformed and damaged to cause instability accidents. Therefore, the horizontal movement of the soil caused by excavation or heaping, and then the horizontal load of the pile foundation cannot be ignored. Based on the above reasons, the experimental research of passive piles is particularly important.

[0003] Experimental research on passive piles includes field tests, indoor model and centrifugal model tests. According to previous field tests, the problems faced in actual ...

Claims

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