Multi-bag type joint-expanded anchor rod and foundation pit supporting construction method
A construction method and bolt technology, which can be used in basic structure engineering, construction, sheet pile walls, etc., can solve the problems of high engineering cost, narrow application range, difficult construction, etc., to increase the bond strength and improve the supporting effect. , The effect of shortening the length of the steel pipe
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[0018] The present invention will now be further described with reference to the drawings and preferred embodiments. These drawings are all simplified schematic diagrams, which merely illustrate the basic structure of the present invention in a schematic manner, so they only show the structures related to the present invention.
[0019] Such as figure 1 The shown multi-capsular expansion anchor rod is applied to foundation pit support in geotechnical engineering. It includes a cushion block 1 fixed on the slope of the foundation pit 8, and the exposed end is fixed on the cushion block 1 as an anchor rod The steel pipe 2 of the main body has a bearing plate 3 connected to the outer wall of the steel pipe 2 fixed on the end surface of the cushion block 1. The exposed end of the steel pipe 2 in the foundation pit is provided with a one-way valve 4, and the steel pipe 2 extending into the rock and soil is spaced fixedly There are several rubber membranes 5, and the steel pipe 2 cove...
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