Electric transmission line fabricated sheet pile composite foundation and construction method
A technology for composite foundations and transmission lines, which is applied in the field of transmission line assembled sheet pile composite foundations and construction, can solve the problems of unfavorable mechanized construction, low level of safety quality, and large amount of earthwork, so as to improve reliability and economy, and effectively Conducive to the effect of uniform transmission and less concrete consumption
Pending Publication Date: 2019-03-08
NANJING UNIV OF TECH
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Problems solved by technology
[0004] 1. When the upper load is large, the embedment depth and size of the large slab foundation are large, resulting in a large excavation volume of foundation pit, high construction strength and high project cost
[0005] 2. The large slab foundation adopts the form of cast-in-place concrete, which has complicated procedures and has a great impact on the construction site, which is not conducive to mechanized construction, resulting in low construction efficiency and low safety and quality levels
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[0028] The present invention will be further described below in conjunction with the accompanying drawings.
[0029] Such as Figure 1 to Figure 3 , The present invention is an assembled sheet pile composite foundation for transmission lines, comprising an upper pile foundation 1 , a sheet foundation 2 and a lower pile foundation 3 .
[0030] The slab foundation 2 includes an I-beam 21, a prefabricated concrete slab 22 and a connecting beam 23, and a connecting beam 23 is welded on the upper and lower sides of each I-beam 21 side end, and the four I-beams 21 form ten It is distributed in a font shape, and an installation cavity is formed between two adjacent I-beams 21 . Place several precast concrete slabs 22 in each installation cavity, the precast concrete slabs 22 and the I-beams 21 together form a rectangular slab foundation 2, and the connecting beam 23 at the end of the I-beam 21 is placed at the center of the slab foundation 2 .
[0031] Both the upper pile foundati...
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The invention discloses an electric transmission line fabricated sheet pile composite foundation and a construction method. A board foundation comprises I-beams, precast concrete boards and connectingbeams, the upper and lower sides of the tail end of one side of each I-beam are each provided with one connecting beam in a welded manner, the four I-beams are distributed in a cross-shaped manner, amounting cavity is formed between every two adjacent I-beams, a plurality of precast concrete planks are placed in each mounting cavity, and the precast concrete planks and the I-beams jointly form arectangular board foundation; an upper pile foundation and a lower pile foundation are each formed by a steel cage and concrete in a pouring manner, the bottom end of the reinforcement cage in the upper pile foundation is fixedly connected with the connecting beam on the upper middle side of the board foundation, and the top end of the reinforcement cage in the lower pile foundation is fixedly connected to the connecting beam on the lower middle side of the board foundation. The invention has good integrity and is favorable for uniform transmission of the upper load; bearing force on the weakfoundation is high, the concrete consumption is less, the construction period is short, and the engineering cost is low; and the reliability and economical efficiency of electric transmission line engineering can be improved.
Description
Technical field: [0001] The invention relates to an assembly-type sheet pile composite foundation of a power transmission line and a construction method thereof. Background technique: [0002] With the rapid development of the national economy, transmission lines develop rapidly under different geological conditions, and most of the areas along the river and coastal areas are weak foundations, which brings great trouble to the foundation design of transmission lines. Compared with other areas with good geological conditions, the foundation engineering cost of transmission lines with weak foundations is generally higher than the average cost of similar foundation engineering. Therefore, reducing the basic engineering quantity of transmission lines has always been the focus and difficult problem of line design engineering. [0003] At present, in the weak ground of the foundation project of the transmission line, the cast-in-place concrete slab foundation is generally used, t...
Claims
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IPC IPC(8): E02D27/12E02D27/01E02D27/42E02D5/36
CPCE02D5/36E02D27/016E02D27/12E02D27/42E02D2300/002
Inventor 张大长韩丽婷王震球
Owner NANJING UNIV OF TECH