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A method for testing pile side friction resistance

A test method and friction resistance technology, which is applied in the test of basic structure, construction, basic structure engineering, etc., to achieve the effect of reducing the test work intensity, guaranteeing the test results, significant rationality and superiority

Active Publication Date: 2020-04-10
CHINA ROAD & BRIDGE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a test method for pile side friction resistance in order to solve many problems existing in the existing pile side friction resistance test method

Method used

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  • A method for testing pile side friction resistance
  • A method for testing pile side friction resistance
  • A method for testing pile side friction resistance

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Experimental program
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Embodiment Construction

[0033] see figure 1 with figure 2 Shown:

[0034] The test method of pile side friction resistance provided by the invention, its method is as follows:

[0035] Step 1. Fabrication of the load box:

[0036] Use steel plates to make two discs with a diameter smaller than the diameter of the pile to be measured, which are respectively used as the upper pressure plate 1 and the lower pressure plate 2, and then fix several anchor cables 3 on the lower pressure plate 2, and one of the anchor cables The gauge 3 is located at the center of the lower pressure bearing plate 2, and the other anchor cable gauges 3 are evenly distributed on a concentric circle near the outer side of the lower pressure bearing plate 2; a lifting ring 4 is welded at the center of the upper pressure bearing plate 1 for lifting; Finally, the upper pressure bearing plate 1 and the lower pressure bearing plate 2 are connected by six tooth bars 5, each tooth bar 5 is equipped with a nut, and a light protecti...

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Abstract

The invention discloses a testing method of pile side friction resistance. The method comprises the steps that 1, a load box is manufactured; 2, the load box is placed; 3, concrete is poured; 4, piletop loading is carried out; 5, data is collected; 6, the pile side friction resistance is calculated; 7, single soil layer measurement is carried out; and 8, single soil layer side friction resistanceis calculated. The testing method has the beneficial effect of having more remarkable reasonability and superiority compared with a traditional measurement method. Simplification of the testing method, reduction of testing work intensity, widening of the detecting range and improvement of the detecting efficiency can be achieved truly, the test result conforms to actuality better, and accuracy and objective of the test result can be ensured better.

Description

technical field [0001] The invention relates to a method for testing frictional resistance, in particular to a method for testing pile side frictional resistance. Background technique [0002] At present, pile foundation is a widely used foundation form. The pile and the soil are in contact at the side wall and the end, and the complexity of the force is determined by the variability of the soil layer and the interaction between the pile and the soil. The bearing capacity of piles includes two parts: side friction resistance and end bearing capacity, among which side friction resistance is a variable quantity. In the current relevant codes, according to the influence degree of main factors such as pile-soil material characteristics, pile-soil interface characteristics, and pile construction technology on the pile side friction resistance, it is concluded that the pile side friction resistance has a certain degree of soil layer and pile type. Under certain circumstances, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D33/00
CPCE02D33/00
Inventor 安爱军
Owner CHINA ROAD & BRIDGE
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