Experimental Model and Test Method for Horizontal Bearing Behavior of Prestressed Concrete Pipe Pile

A concrete pipe pile and characteristic test technology, applied in the test of foundation structure, using stable tension/pressure to test the strength of materials, construction, etc., can solve the difficulty in judging the authenticity and accuracy of calculation results, and the great difference in engineering practice and other issues to achieve the effect of ensuring test accuracy, avoiding limitations, and reducing test errors

CN103882894BActive Publication Date: 2016-02-03SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2016-02-03

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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.
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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...

Examples

Embodiment Construction

[0061] The present invention is described in detail below in conjunction with accompanying drawing:

[0062] Such as Figure 1-Figure 3As shown, the test model of the horizontal bearing characteristics of prestressed concrete pipe piles includes a model groove 1, and the cap 6 for carrying the model pile is arranged in the model groove 1, and the upper end of the model pile 7 is embedded in the cap 6 The lower end of the model pile 7 is embedded in the sand 8; a vertical pneumatic loading system 4 connected to the vertical reaction frame 2 and implementing a vertical force to the cap is provided above the model groove 1, the model The inner side of the tank 1 is provided with a horizontal pneumatic loading system 3 connected thereto and exerting a horizontal force on the platform, and a monitoring device is provided on the platform 6, the model pile 7 and the loading system.

[0063] The monitoring device is a dial indicator 9 arranged on the cap, a strain gauge 11 arranged o...