Construction Method of Composite Pile Based on Field-wide and Full-period Field Measured Data

Abstract

The invention discloses a construction method of a composite pile based on foundation all-domain and full-cycle measured data. An intelligent multifunctional stirring shaft containing a sensing systemis used, meanwhile detecting sensing elements are arranged on a peripheral pile and a core pile which are containing sensitive materials to form a measuring system, and in-situ testing, engineering geological geophysical exploration and ultrasonic CT imaging geological survey functions are integrated; and the collected information is analyzed by an analysis system, and a construction staff adjusts the subsequent composite pile construction in real time based on analysis results to further control the gunning, dust spraying and mixing operation and core pile insertion operation. The construction method can be used for surveying and calculating the foundation all domain and full cycle, data of equipment, a pile body and soil around the pile are measured and analyzed during construction andthe construction parameters are adjusted in real time, the data of the pile and the soil around the pile are measured after construction, and analysis and calculation are carried out by combining engineering experience to accurately obtain the basic bearing capacity, settlement, stability and other indicators.

Description

technical field [0001] The invention relates to a composite pile construction method based on the measured data of the whole area and the whole period of the foundation. Background technique [0002] Due to the ambiguity of calculation conditions, incompleteness of information, limitations of calculation methods and uncertainty of various imaginary boundary conditions in the existing composite pile design, the bearing capacity of the pile foundation cannot be fully and accurately calculated. , settlement, stability and other indicators must be determined through on-site load tests, which is costly and has a long construction period, and cannot be tested for the entire site. It is impossible to adjust the construction parameters, and it is easy to cause the construction effect to be inconsistent with the design requirements. After completion, there will be problems of insufficient bearing capacity, excessive settlement, and uneven settlement. At this time, it will be expensiv...

AI Technical Summary

Problems solved by technology

[0002] Due to the ambiguity of calculation conditions, incompleteness of information, limitations of calculation methods and uncertainty of various imaginary boundary conditions in the existing composite pile design, the bearing capacity of the pile foundation cannot be fully and accurately calculated. , settlement, stability and other indicators must be determined through on-site load tests, which is costly and has a long construction period, and cannot be tested for the entire site. It is impossible to adjust the construction parameters, and it is easy to cause the construction effect to be inconsistent with the design requirements. After the completion, there will be problems of insufficient bearing capacity, excessive settlement, and uneven settlement. At this time, it will be expensive to make up for it

The existing composite pile quality inspection adopts the traditional small strain detection of cement soil, coring and other methods, which are only applicable to the traditional pure cement soil pile, and it is impossible to know that the peripheral pile of the composite pile is squeezed and dense, and after hardening, the inner and outer piles are hardened. In addition, the gradual change modulus from top to bottom cannot know the changes in the modulus of the foundation soil around the pile before, during and after construction at each stage. It is necessary to establish a full-scale full-cycle detection system