Structure for limiting horizontal displacement of pile foundation in deformable body rock stratum and construction method
A technology of horizontal displacement and construction method, which is applied in the direction of foundation structure engineering, sheet pile walls, buildings, etc., can solve the problems that cannot cope with the horizontal displacement of the foundation of phyllite formation, and achieve the effect of simple construction and low engineering cost
Pending Publication Date: 2020-08-07
四川省交通勘察设计研究院有限公司
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Problems solved by technology
[0005] In view of this, the first aspect of the present invention provides a structure for limiting the horizontal displacement of the pile foundation in the deformed rock formation, so as to solve the technical problem that the construction measures in the prior art cannot deal with the horizontal displacement of the pile foundation caused by the phyllite formation
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Embodiment 1
[0035] A structure that limits the horizontal displacement of pile foundations in a deformed rock formation, such as figure 1 and figure 2 As shown, it includes a first casing 1 , a second casing 2 and a third casing 3 arranged on the outer periphery of the pile foundation 7 . Wherein, the radius of the third casing 3 is greater than the radius 18 centimeters of pile foundation 7 design sections (considering the influence of foundation construction error), the radius of the second casing 2 is greater than the radius 20 centimeters of the third casing 3, the first casing The radius of 1 is greater than the radius 30 centimeters of the second casing 2. The bottoms of the first casing 1 , the second casing 2 and the third casing 3 exceed the bottom of the deformed rock formation 8 and are anchored into the non-deformed rock formation 9 .
[0036] Such as figure 1 and figure 2 As shown, anti-deformation concrete 4 is filled between the first casing 1 and the second casing 2....
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The invention discloses a structure for limiting horizontal displacement of a pile foundation in a deformable body rock stratum and a construction method, and relates to the technical field of pile foundation construction. The technical problem that in the prior art, construction measures cannot deal with the pile foundation horizontal displacement caused by a phyllite stratum is solved. The structure comprises an anti-deformation structure and a buffer structure, the anti-deformation structure is an annular structure which is arranged on the periphery of the pile foundation and anchored intoa non-deformable body rock stratum, and the buffer structure is arranged between the pile foundation and the anti-deformation structure. According to the structure, the annular anti-deformation structure anchored into the non-deformable body rock stratum is arranged in the range of the deformable body rock stratum; the buffer structure is arranged between the pile foundation and the annular anti-deformation structure; on one hand, the horizontal displacement directly caused by the displacement of the deformable body rock stratum to the pile foundation is prevented through the anti-deformationstructure; and on the other hand, the displacement of the anti-deformation structure is buffered through the buffer structure, so that the deformable body rock stratum is allowed to deform within a certain range, and the horizontal displacement of the pile foundation in the deformable body rock stratum is effectively limited.
Description
technical field [0001] The invention relates to the technical field of pile foundation construction, in particular to a structure and a construction method for limiting the horizontal displacement of a pile foundation in a deformed rock layer. Background technique [0002] In recent years, more and more mountain roads have been planned and constructed. The planning and construction of mountain roads are inseparable from the planning and construction of bridges and tunnels, especially in some southwestern mountainous areas, where high seismic intensity, accompanied by fault fracture zones, and bridges in phyllite strata have brought great difficulties to tunnel construction. Especially the deformation of phyllite has brought great hidden danger to the safety of bridge structure. [0003] The phyllite formation is soft in lithology, and it is easy to muddy and soften when it encounters water, which will lead to a large amount of deformation. The deformation of the rock mass w...
Claims
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IPC IPC(8): E02D5/38E02D5/60E02D5/66E02D15/04E02D27/12
CPCE02D5/38E02D5/60E02D5/665E02D15/04E02D27/12
Inventor 张生袁松王希宝
Owner 四川省交通勘察设计研究院有限公司
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