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| Research on the Prevention and Treatment about Bridge Engineering Disease in Deep Soft Soil Area |
| KANG Cheng - lei1，LIN Wen - quan2 |
| (1. China Railway Siyuan Group Southwest Survey and Design Co. Ltd，Kunming，Yunnan 650200，China; 2. China Railway Siyuan Survery and Design Co. Ltd, Wuhan, Hubei 430063，China) |
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Abstract Research purposes ： The main line bridge through Luoya Village in the third tenders of Kunming Nan highway connecting is located in deep soft soil area of the Dianchi rift basin. Through analysis of the disease case of main line bridge through Luoya Village，this paper proposes measures and suggestions to control engineering disease of the deep soft soil foundation bridge，to provide a reference for the design and constmction of deep soft foundation bridge in the future. Research conclusions ：(⑴ The influence of negative frictional resistance in deep soft soils on bridge construction and operation safety is more sensitive than general soft foundation， so this must be fully considered in the design，and the adverse effects of unbalanced load or load shedding must be fully thought about in the process of construction，operation and subsequent land development. (2) The design of deep soft foundation bridge must fully consider the necessary basic settings such as constriction road，and the engineering activities that may have adverse effects on the environment of the surrounding area will be strictly limited in design notes. (3) The research result is suitable for bridge engineering design， constriction，security protection and surrounding land development in the deep soft soil area，also provides a reference for the safety constriction of other engineering in deep soft foundation space.
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Received: 07 July 2015
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2015, Vol. 32 
