Foundation pit supporting structure for bridge main pier bearing platform on riverway abrupt slope bed rock and construction method of foundation pit supporting structure
A technology for supporting structures and river channels, which is applied in basic structure engineering, bridges, bridge parts, etc. to achieve the effect of realizing water stop, ensuring stability and ensuring smooth construction.
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[0024] Such as figure 1 , 2 As shown in , 3 and 4, the foundation pit support structure of the bridge main pier cap on the steep river slope bedrock of the present invention includes a cofferdam island 1, which is characterized in that the cofferdam island 1 is near the channel of the river A steel sheet pile watertight curtain is arranged on one side of the steel sheet pile, and the steel sheet pile watertight curtain is composed of several steel sheet piles 6 arranged vertically side by side, and the sides of the adjacent steel sheet piles 6 are engaged with each other to form a watertight curtain. The steel sheet pile water-stop curtain is provided with a construction access road 8 composed of an annular sand and gravel soil layer on the side facing away from the waterway, and the plane of the construction access road 8 is lower than the top surface of the steel sheet pile water-stop curtain. The construction access road 8 is provided with an annular reinforced concrete ar...
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