According to the current status quo of deep foundation pit engineering of coastal overpasses in Omar Saudi Arabia,the composit sup-port system of“steel supporting pile+prestressed anchor cable+wood block soil”is proposed,combined with advanced technology of deep foun-dation pit and used the finite element to creat a model. The result shows that the system can satisfy construction requirements.%针对沙特沿海地区奥马尔市立交桥深基坑工程现状，利用有限元模型，结合国内外先进的深基坑支护技术，提出了“型钢支护桩＋预应力锚索＋方木挡土板”的综合支护体系，施工实践表明：该支护体系满足了基坑施工要求。
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