水域固定式光伏电站预应力管桩水平荷载试验研究

Experimental study on horizontal load of prestressed pipe piles for fixed photovol power stations in waters

依据理论分析,建立预应力管桩力学模型,对水域固定式光伏电站预应力管桩进行荷载试验。在水平荷载设计值作用下,管桩构件水平位移值超过规范和理论值,不满足设计要求,应变值未超过理论计算限值要求。试验结果表明,力学模型的边界条件将锚固端假设为固定支座,存在一定误差,因此,工程实践中,应对管桩锚固端采取加固处理措施,以满足水平荷载作用下抗侧移能力。

According to theoretical analysis, the mechanical model of the prestressed pipe pile is established for the prestressed pipe pile of the fixed photovoltaic power station in waters. The horizontal displacement values of the pipe pile members exceed the specification limit and theoretical values, which does not meet the design requirements under the action of the horizontal load design values. The strain values of the members does not exceed the theoretical calculation limit. The test results show that the boundary condition of the mechanical model assumes that the anchoring end is a fixed bearing with certain error. Therefore, the anchoring end of the pipe pile should be strengthened in engineering practice to meet the ability to resist lateral displacement in the horizontal load effect.