Prestressed concrete pipe pile horizontal bearing characteristic test model and test method

Abstract

The invention discloses a prestressed concrete pipe pile horizontal bearing characteristic test model and a test method. The prestressed concrete pipe pile horizontal bearing characteristic test model comprises a model groove, a bearing table used for bearing a model pile is arranged in the model groove, and the upper end of the model pile is embedded into the bearing table. A vertical pneumatic loading system exerting vertical force on the bearing table and connected with a counter force frame is arranged above the model groove. The inner side of the model groove is provided with a horizontal pneumatic loading system exerting horizontal force on the bearing table and connected with the model groove. Monitoring devices are arranged on the bearing table, the model pile and the loading system. The invention provides a test device which can well meet the requirement for load conditions of a pile foundation load test, simulate the practical working conditions of the pile foundation more truly and detect the bearing characteristics of a single pipe pile and group pipe piles under the action of horizontal loads.

Description

technical field [0001] The invention relates to a civil engineering test model and method, in particular to a load-bearing characteristic test model and method of prestressed concrete pipe piles in building structures. Background technique [0002] The research on the bearing characteristics of prestressed concrete pipe piles mainly includes the research on the bearing characteristics of single pipe piles, the research on the bearing characteristics of pipe pile groups, and the research on the bearing characteristics of pipe pile groups under vertical load. Since the pile foundation is an underground project, there are many uncertain factors, and the field test is affected by the construction period, environmental factors and human factors of the project, so it is difficult to comprehensively analyze and study the bearing characteristics of the pile foundation under multiple working conditions. Therefore, the current research on pile foundation mainly relies on numerical cal...

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Problems solved by technology

However, methods such as numerical calculation are greatly affected by physical parameters and constitutive models, so it is difficult to determine the authenticity and accuracy of the calculation results, and sometimes the results are very different from the actual engineering

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