The corrosion damage of reinforced concrete balustrades of LianYun-Harbor west dam is investigated by on-site and lab testing. The contents of investigation include outlook-check on site, un-damaged test, and lab-test of on-site samples. It shows as follow: Cl- penetration is the direct reason of concrete corrosion damage under marine environment, and poor construction quality is the main reason. At the same time the primary design is not reasonable. Reinforcement corrosion in concrete is the synthetic effect of environment, construction and design. Now, the corrosion has threatened the normal function of balustrade structure and the balustrade structure needs repair and rehabilitation.

进行了小尺寸混凝土试件温度试验，拟定了钢筋混凝土框架结构温度作用试验方案。通过对此框架在温度作用及温度、机械荷载共同作用下的试验研究，观测了温度裂缝发生和发展的过程。试验结果与钢筋混凝土非线性有限元分析结果基本吻合。

分析了影响混凝土徐变的诸因素，提出估算大体积混凝土徐变度的数学模型；根据国内徐变试验资料，用优化方法确定了公式参数。在此基础上按弹性徐变理论推求出混凝土的应力松弛系数，编制成便于实用的计算表格。算例表明，本文提出的估算方法，在总体上均优于其他公式，可满足工程设计的实用要求。

The experimental study on the behavior of bond-slip between earthquake -resisting bars and concrete in Xiaowan arch dam is conducted. Tests are conducted on four groups of specimens. The position dependent constitutive relationship of bond-slip between the concrete and bars is obtained. The method can provide sufficient data for plotting the distribution of steel stress, bond stress, and slip. Finally, several practical conclusions are drawn.

以武汉水利电力人学承担试验的二峡水电站下游坝面钢衬钢筋混凝十压力管道大比尺平面模型为对象，采用不同的钢筋混凝土非线性有限元程序计算分析模型的初裂荷载，各荷载阶段的钢材、混凝土的应力，裂缝发生、发展、裂缝间距、裂缝宽度等，与模型试验实测结果进行分析对比，进一步完善钢筋混凝十非线性有限元方法。