Key Technology for Receiving Large-section Rectangular Pipe Jacking in Operational Buildings:Taking the Underground Connection Project between the First and Second Phase Underground Garages of Jiatinghui City Life Plaza in Shanghai as an Example
The application of large-section rectangular pipe jacking in urban underground liaison channel engineering was be discussed,especially the key technologies involved in receiving pipe jacking within operational buildings,based on the underground connection project between the first and second phase underground garages of Jiading District's Jiatinghui City Life Plaza in Shanghai.The key technologies covered the use of earth pressure balance rectangular pipe jacking machines,constructing arch-frame structures to connect the external walls and protective structures of the receiving end,employing specialized high-pressure jet grouting processes for fat trench reinforcement,and implementing the"abandon shell"method for pipe reception.Additionally,how to handle the connection joints between prefabricated pipe sections and cast-in-place sections to ensure the strength and waterproofing of the tunnel walls was described.The result demonstrates that in complex urban environments,the large-section rectangular pipe jacking method can successfully receive pipes without affecting the normal operation of the receiving-end building.
large-section rectangular pipe jacking"abandon shell"method for pipe receptionarch-frame structuresjoint processing
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