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  方涵模具為充分利用地下空間，節約土地資源，需滿足多種類管線入廊的需求，目前國內設計的綜合管廊模具其斷面尺寸都比較大，普遍達到三艙以上且單艙凈跨大，導致管廊自身重量大大增加，造成預制裝配的施工安裝難度大大增加。為此，急需解決多艙大斷面綜合管廊的預制裝配式的分割及接合技術，實現裝配施工的輕便、快速、安全。
隨著預應力技術的發展，預制裝配分段、分節施工方法在近些年來得到了技術上的發展。分段、分節預制裝配施工工藝在體外預應力技術的支持下，充分發揮其施工速度快，施工質量好等優點，得到了廣泛的認可

In order to make full use of the underground space and save the land resources, the square culvert mold needs to meet the needs of many kinds of pipelines entering the corridor. At present, the cross-section dimensions of the comprehensive pipe gallery mold designed in China are relatively large, generally reaching more than three compartments and the clear span of a single compartment is large, which leads to a great increase in the weight of the pipe gallery itself, resulting in a great increase in the construction and installation difficulty of prefabrication and assembly. Therefore, it is urgent to solve the division and joint technology of prefabrication and assembly of multi compartment and large section comprehensive pipe gallery, so as to realize the light, fast and safe assembly construction.

With the development of prestressing technology, the construction method of prefabrication and assembly section by section has been developed technically in recent years. With the support of external prestressing technology, the construction technology of segmental and segmental prefabrication and assembly gives full play to its advantages of fast construction speed and good construction quality, which has been widely recognized