A method for predicting pile driving force when the end of prefabricated pile encounters a boulder
A prediction method and technology of prefabricated piles, applied in the field of infrastructure construction, can solve the problems of unreliability and difficulty in piling, and achieve the effects of reliable results, strong process flow and convenient use.
Active Publication Date: 2022-06-21
FUJIAN UNIV OF TECH
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Problems solved by technology
[0002] There are often boulders in the weathered residual soil of granite. When driving precast piles, when the end of the prefabricated pile encounters boulders, piling will become difficult. In this case, can the prefabricated pile be driven to the predetermined depth smoothly? , currently mostly rely on experience to judge, and there is no reliable method to predict the determination of piling force
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[0040] In order to make those skilled in the art better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of them. example. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of protection of the present application.
[0041] It should be noted that the terms "first", "second" and the like in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances for the embodiments of the application described herein. Furthermore, the te...
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The invention relates to a method for predicting pile driving force when the end of a prefabricated pile encounters a boulder, including the following parameters: the length of the driven pile, the diameter of the pile; the diameter of the boulder; the dynamic cohesion of the soil around the pile, the dynamic internal friction angle, the effective Internal friction angle, coefficient of static earth pressure, weight above groundwater level and weight below groundwater level; pile length above and below groundwater level; effective weighted average weight of soil in depth within pile length; Piling resistance; the average vertical stress, average horizontal stress, and average normal stress of the lower half of the boulder; the average shear strength of the lower half of the boulder; the resistance of the lower half of the boulder to piling; the upper half The average vertical stress and average horizontal stress; the average normal stress, average shear strength, and resistance to piling of the upper half of the boulder; the pile driving force when the end of the prefabricated pile meets the boulder. The invention can determine the required pile driving force when the end of the prefabricated pile encounters a boulder, and timely determine and adjust the construction scheme, and is convenient to use.
Description
Technical field: [0001] The invention belongs to the field of infrastructure construction, and particularly relates to a method for predicting the pile driving force when the end of a prefabricated pile encounters a boulder. Background technique: [0002] There are often boulders in the weathered residual soil of granite. When the precast pile is driven, when the end of the precast pile encounters a boulder, it will become difficult to drive the pile. In this case, whether the precast pile can be successfully driven to the predetermined depth. At present, most of them rely on experience to determine, and there is no reliable method to predict the determination of the piling force. Invention content: [0003] The present invention makes improvements to the problems existing in the above-mentioned prior art, that is, the technical problem to be solved by the present invention is to provide a method for predicting the pile driving force when the end of a prefabricated pile en...
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IPC IPC(8): G06F30/13G06F119/14
CPCG06F30/13G06F2119/14
Inventor 陈华艳罗才松王枫轩詹金武付朝江
Owner FUJIAN UNIV OF TECH