本文選題：鋼板樁圍堰　切入點：結構計算　出處：《武漢工程大學》2015年碩士論文

【摘要】：隨著我國城鎮(zhèn)化進程的加快和經(jīng)濟的高速發(fā)展,越來越多高效、便捷、環(huán)保的建筑工法逐漸得到工程界的認可,鋼板樁咬合形成墻因具有強度高、抗?jié)B性好、施工便捷、可重復使用、成本低等優(yōu)點在防洪斷流、橋墩圍堰、抗洪搶險等臨時構筑物中得到了廣泛的應用。鋼板樁圍堰是橋梁基礎承臺施工過程中重要的支護結構,關于鋼板樁圍堰安全穩(wěn)定性分析的研究也取得了很好的成果,形成了比較成熟的分析方法。本文在收集整理國內(nèi)外研究資料的基礎上,歸納總結了鋼板樁圍堰的計算方法,比較分析了傳統(tǒng)計算方法中的自由支承法、等值梁法、彈性曲線法、豎向彈性地基梁法和有限元計算方法,并介紹了有限元分析的原理。介紹了常用的各向同性的材料的本構模型,并結合有限元分析軟件介紹了莫爾—庫倫模型中的相關參數(shù)。以白云潭大橋2#橋墩鋼板樁圍堰為工程背景,介紹了有限元計算的流程,利用有限元計算的結果分析了該鋼板樁圍堰的強度和變形,并提出了方便施工的優(yōu)化設計方案:運用有限元分析軟件對鋼板樁圍堰的施工過程進行模擬,計算在各工況下的鋼板樁的應力和應變,在滿足鋼板樁和內(nèi)支撐穩(wěn)定性要求的前提下,調(diào)整圍堰內(nèi)支撐布置方案,可以在方便施工的同時保證橋梁承臺的施工質量。
[Abstract]:With the acceleration of urbanization and the rapid development of economy in China, more and more efficient, convenient and environmentally friendly construction methods have been gradually recognized by the engineering community. The wall formed by steel plate and pile occlusion has high strength, good impermeability and convenient construction. The advantages of reusability and low cost have been widely used in temporary structures such as flood control, pier cofferdam, flood prevention and rescue, etc. Steel plate pile cofferdam is an important supporting structure in the construction of bridge foundation cap. The research on the safety and stability analysis of steel plate pile cofferdam has also achieved good results, and a more mature analysis method has been formed. On the basis of collecting and arranging the domestic and foreign research data, this paper summarizes the calculation methods of steel plate pile cofferdam. The free support method, equivalent beam method, elastic curve method, vertical elastic foundation beam method and finite element method are compared and analyzed. The principle of finite element analysis is introduced, and the constitutive model of isotropic materials is introduced. The related parameters of Mohr-Coulomb model are introduced with the finite element analysis software. Taking Baiyuntan Bridge pier steel plate pile cofferdam as the engineering background, the finite element calculation process is introduced. The strength and deformation of the steel plate pile cofferdam are analyzed by using the result of finite element calculation, and the optimal design scheme is put forward: the construction process of the steel plate pile cofferdam is simulated by using the finite element analysis software. The stress and strain of steel plate pile under various working conditions can be calculated and the construction quality of bridge cap can be guaranteed by adjusting the layout of inner support of cofferdam on the premise of satisfying the requirements of stability of steel plate pile and internal support.
【學位授予單位】：武漢工程大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U445.556

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