A construction method of cast-in-situ steel casing piles suitable for passing through civil air defense structures
A construction method, steel casing technology, applied in foundation structure engineering, sheet pile walls, buildings, etc., can solve problems such as data loss, achieve the effects of preventing diffusion, saving cost and construction period, and simple and easy operation
Active Publication Date: 2021-07-20
BEIJING URBAN CONSTR NORTH CONSTR
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Problems solved by technology
[0004] In order to make up for the above deficiencies, the present invention provides a steel casing cast-in-place pile construction method suitable for passing through civil air defense structures, aiming to improve the problem of data loss in the audio transmission process of the existing RTP protocol under the condition of a poor network The problem of phenomena
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[0037] see figure 1 , the invention provides a construction method for cast-in-place steel casing piles suitable for passing through civil air defense structures, comprising the following steps
[0038] S1: Select the curved steel plate 101, and select several sections of the curved steel plate 101 with a thickness of 12mm and a length of 1.5m according to the hole diameter of the cast-in-place pile. The scope of the civil air defense structure 309 is the pipeline structure buried under the ground to prevent flooding before. When the cast-in-situ pile drills through the civil air defense structure 309, two holes will be opened in its side wall.
[0039] S2: Production of steel casing 201, steel casing 201 is welded by two semicircular curved steel plates 101, and the outer wall of each section of steel casing 201 after completion is also painted with anti-corrosion and anti-rust paint layer (not shown in the figure ), using the setting of the anti-corrosion and anti-rust coat...
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The invention provides a construction method for a cast-in-situ pile with a steel casing suitable for passing through a civil air defense structure, and belongs to the technical field of cast-in-situ pile construction. The method for constructing a cast-in-situ pile with a steel casing suitable for passing through a civil air defense structure includes the following steps: S1: selecting a curved steel plate, and selecting several sections of a curved steel plate with a thickness of 12 mm and a length of 1.5 m according to the bore diameter of the cast-in-place pile; S2: producing a steel sleeve Pipe, steel casing is welded by two semi-circular curved steel plates; S3: Making steel casing, the steel casing is welded by several sections of steel casing; S4: Fixing the steel casing, welding the steel casing At the position of the original steel cage corresponding to the elevation of the civil air defense structure. In the invention, the steel bars are welded and fixed to the steel cage, and the size of the steel casing is designed according to the diameter of the pile. The bending steel plate can effectively isolate the concrete, prevent the concrete from spreading in the air defense structure, and ensure the hardening and condensation of the concrete in the steel casing. Combined with cast-in-place piles, high strength and good toughness.
Description
technical field [0001] The invention relates to the construction field of cast-in-place piles, in particular to a construction method for cast-in-place piles with steel casings suitable for passing through civil air defense structures. Background technique [0002] At present, the process of urbanization is accelerating, and with the construction of high-rise buildings, it has become a trend to increase the development and utilization of underground space. Due to the needs of the times, many air-raid shelters were built underground. Due to the lack of early data, there is some resistance to the current foundation pit support construction. Bored piles have become a widely used support form due to their advantages such as low construction noise, applicable to various strata, and wide range of manufacturing sizes. [0003] Affected by hydrogeology, there is a situation of groundwater filling in the civil air defense structure. When the cast-in-situ piles are drilled through th...
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IPC IPC(8): E02D5/38E02D5/66
CPCE02D5/38E02D5/665
Inventor 吴楠钟国龙曾辉王振兴王卫新郭腾张有振
Owner BEIJING URBAN CONSTR NORTH CONSTR