Horizontal bi-directional cyclic load loading device based on model box and testing method

A loading device, two-way circulation technology, applied in the test of infrastructure, infrastructure engineering, construction, etc., can solve the problems of limited research, enlarged safety factor, waste, etc.

Pending Publication Date: 2018-03-23
GRANTOP GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the current research on piles subjected to two-way horizontal cyclic loads is very limited. In order to ensure safety in actual engineering, the method of enlarging the safety factor is adopted, resulting in a large waste

Method used

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  • Horizontal bi-directional cyclic load loading device based on model box and testing method
  • Horizontal bi-directional cyclic load loading device based on model box and testing method
  • Horizontal bi-directional cyclic load loading device based on model box and testing method

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Embodiment Construction

[0042] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0043] The horizontal two-way cyclic load loading device based on the model box includes the model box 1, the loading system and the monitoring system. The specific structure and connection relationship of each system are as follows:

[0044]The model box 1 is a cubic box-shaped structure with an open top, and its inner lower side is filled with a soil layer, and the space between the surface of the soil layer and the upper edge of the box body is filled with water; the four sides and the bottom of the model box 1 are all steel plates; Evenly arranged drainage holes are arranged at the bottom of the sides, and filter screens are arranged in the drainage holes. The soil layer is divided into the gravel layer 2 of the lower layer and the clay layer 3 of the upper layer. The thickness of the gravel layer 2 is 10cm, and the distance between the surface of the clay layer 3...

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Abstract

The invention relates to the field of study of marine pile foundation engineering, and provides a horizontal bi-directional cyclic load loading device based on a model box and a testing method. The horizontal bi-directional cyclic load loading device is characterized in that the model box is of a cube box structure of which the top is open, the model box is filled with a soil layer, and water is accommodated on the surface of the soil layer; fixed pulleys are mounted on the two adjacent edges of the model box; a loading system comprises two completely the same loading components used for forcecycle controlled loading; a monitoring system comprises a data collector; and the data collector is connected with dynamometers, strain gages and displacement sensors through a cable. According to the horizontal bi-directional cyclic load loading device, cyclic load effects like storm load and wave load suffered by a marine pile foundation can be simulated in the model box, two horizontal cyclicloadings perpendicular to each other are achieved, real simulation is achieved, different two-dimensional horizontal cyclic loads are output through changing of conditions like load amplitude, cycle frequency and cycle times, and superposition of loads under various natural conditions is simulated.

Description

technical field [0001] The invention relates to the research field of marine pile foundation engineering, and relates to a two-dimensional horizontal bidirectional cyclic load loading device and a test method based on a model box test. Background technique [0002] With the continuous expansion of marine development and construction, there are more and more pile-based marine engineering constructions, such as offshore wind turbines, offshore oil drilling platforms, and transmission towers. The special environment at sea, such as the long-term cyclic loading of wind and waves, brings great challenges to the design of pile foundations. The action of cyclic loading will lead to the cumulative deformation and plastic strain increase of the soil around the pile, which will cause the superstructure to tilt too much, the stiffness of the soil around the pile will decrease, and the bearing capacity of the pile foundation will decrease. [0003] Due to the complex natural conditions...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D33/00
CPCE02D33/00E02D2600/10
Inventor 齐添吴宁李国民张金荣祝健钊
Owner GRANTOP GRP CO LTD
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