作　　者： ;

机构地区： 河海大学港口海岸与近海工程学院海岸灾害及防护教育部重点实验室

出　　处： 《湖南大学学报（自然科学版）》 2018年第A01期35-40,共6页

摘　　要： 分离卸荷式板桩码头结构是一种新型板桩码头结构形式,其主要结构特点是在传统的单锚式板桩码头前墙后方安置一定埋深的桩基卸荷承台来达到对前墙的卸荷效应.以工程原型为参考,建立有限元数值模型,在控制桩墙单宽混凝土用量总和相同的条件下,以桩间距与桩刚度为参数建立数值模型组,以前墙与海陆侧桩的最大截面弯矩及其截面边缘应力为主要判断标准来评价结构参数变化对结构承载特性的影响.结果表明,在原型结构基础上,在维持桩墙单宽混凝土用量之和不变的条件下,适当增加桩间距和桩自身的刚度可使分离卸荷式板桩码头承载特性得到有效的优化,对工程实践有一定的参考价值. The sheet pile wharf with separated relieving platform is a new type wharf.The main structural fea-ture is to install a buried pile foundation unloading platform behind the quay wall of the traditional sheet pile wharf with single anchor to achieve the unloading effect on the quay wall.Based on the engineering prototype,the prototypical numerical model was built.Under the condition of the constant concrete consumption in single-wide pile and wall,the set of comparison models are established.The maximum cross-section bending moment and its edge stress of quay wall and piles are the main criteria to evaluate the effect of structural parameter changes on the bearing char-acteristic of structure.The results show that,based on the prototype structure,properly increasing the pile spacing and the pile section stiffness can effectively optimize the bearing characteristics of the sheet pile wharf with separat-ed relieving platform under the condition of the constant concrete consumption in single-wide pile and wall,which has a certain reference value for engineering practice.

关 键 词： 分离卸荷式板桩码头 弯矩 数值模拟 优化设计

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