Semi-active displacement adjuster
A displacement regulator, semi-active technology, used in protection devices, buildings, infrastructure projects, etc., can solve problems such as high risk, limited adjustment methods, and high hardware requirements, so as to make up for differences in settlement, eliminate influence, and improve The effect of heating efficiency
Active Publication Date: 2019-11-22
NANJING TECH UNIV
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Problems solved by technology
The above-mentioned project is ingeniously conceived and has achieved great success in theory, but the effect is not satisfactory in the promotion and application of specific projects. There are two main reasons: First, most buildings will not face particularly complicated geological conditions and need to be piled up at any time. The rigidity of the foundation support is adjusted; the second is limited to the adjustment method, the high-frequency continuous adjustment process is very complicated and requires high hardware, and the risk is relatively high
Method used
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Embodiment 1
[0034] Such as figure 1 As shown, a semi-active displacement regulator is installed between the pile top and the raft to optimize and adjust the supporting stiffness of the device;
[0035] Including cylinder body 1, first steel ring 2, filling material 3, heating device 4, outlet hole 5, cushioning material 6, steel plate 7, second steel ring 8; steel plate 7 divides the semi-active displacement adjuster into upper and lower parts One-level structure and second-level structure;
[0036] The cylinder body 1 is located between the raft and the base;
[0037] The base is set on the pile foundation and connected with the steel bars;
[0038] The first layer structure: the first steel ring 2 is placed in a concentric circle from 3 to 5 layers, and the height of the first steel ring 2 gradually decreases from the center to the outside, and a yield guide gap is set on the first steel ring 2, adjacent The cushioning material 6 is used to separate the first steel rings 2, and the r...
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Abstract
The invention discloses a semi-active displacement adjuster. A steel plate divides the semi-active displacement adjuster into a first layer structure and a second layer structure in an upper and lowermode. In the first layer structure, first steel rings of 3-5 layers are placed in a concentric circle mode; in the second layer structure, a second steel ring is placed in a central position consistent with the position of the first steel ring at the center of the first layer structure; the middle of the second steel ring is separated by a cushioning material, heating devices and leading-out holes are arranged at the bottoms of a left cavity and a right cavity formed by the second steel ring and a cylinder block, and the remaining cavity parts are filled with filling materials. The semi-active displacement adjuster has the characteristics that the deformation coordination of pile soil can be ensured and the supporting stiffness can be adjusted actively in a construction project, and the characteristics can be used in the fields of pile-soil interaction, variable stiffness setting of building rafts, reuse of building old piles and the like.
Description
technical field [0001] The invention belongs to the technical field of construction engineering and relates to a special device which is arranged between a pile foundation and a raft and can adjust and optimize the magnitude and distribution of the support stiffness of a pile-soil support system. Background technique [0002] The direct rigid connection between piles and rafts in conventional pile-raft foundations, the overall stiffness is determined by the stiffness of the raft slab and the support stiffness of the pile foundation. If it is necessary to adjust the stiffness of the pile raft, it can be achieved by changing the structural form, adjusting the raft thickness, and changing the pile length, pile diameter, and pile distance, etc., but the effect is often not good, the cost is high, and the application range is greatly limited. In order to economically and effectively adjust the overall stiffness of the pile-raft foundation according to the needs, Zhou Feng's res...
Claims
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IPC IPC(8): E02D27/14E02D31/08
CPCE02D27/14E02D31/08E02D2300/0029E02D2200/17E02D2300/0001
Inventor周峰申志福周泽坤杨兆国
OwnerNANJING TECH UNIV