空间简化算法在高桩码头改造工程中的应用

Space simplified algorithm in high-pile wharf reconstruction project

基于基桩+刚性平台空间简化计算模型,引入坐标转换矩阵,提出了可适用于一般高桩码头在水平荷载作用下的空间简化算法,并进行升级改造工程算例验证。算例表明,六维空间简化计算的桩顶侧向位移、侧向内力与有限元方法计算结果接近,简化计算精度可以满足结构设计分析的需要。分析了5种方案的加固效果,认为应优先考虑在横排海侧端的加固方法。对带斜桩的原结构加固,双斜新桩方案优势并不明显,为便于斜桩布置、减少斜桩施工量,推荐采用直桩+斜桩加固方案。

Based on the pile-rigid platform spatial simplified calculation model, and considering coordinate transformation matrix, we develope the space simplified method for general high-pile wharf under lateral loads,which is verified by examples of the upgrading project. The examples show that the lateral displacement and internal force result of the pile top by the 6-D space simplified method are close to the that by the finite element calculation, and the accuracy of the space simplified method can meet the structural design requirements. Based on five kinds of reinforcement programs, we draw the conclusion that the program strengthening at the sea side shall be consider in priority. The results indicate that the advantage is not obvious for the structure with double battered piles. Considering the arrangement and reducing the amount of construction, we recommend the program of vertical and battered piles.