| The thesis intense to analysis and introduce an advanced technology of directly buried hot-water pipelines.The design methods, pipeline arrangement forms, construction difficulties and operation maintenance between directly buried installation without expansion joint and directly buried installation with expansion joint are compared. The design results and economy of the two installation methods are also compared with an engineering example.The feasibility of directly buried hot-water pipelines are studied. According to the Technical Specification For Directly Buried Heating Pipeline Engineering In City, The design methods of directly buried hot-water pipelines are showed.The local stability of directly buried without expansion joint hot-water pipelines are analyzed. |
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