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。

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。

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.

The static and dynamic flexural-tensile properties of fully-graded concrete are important for the seismic safety design of high arch dams. In this paper, the static and dynamic flexural-tensile properties of fully-graded concrete of high arch dam were studied through tests. The fully-graded concrete was loaded by electro-hydraulic servo device. In the static test, the loading rate was 250N/s. In the dynamic test, earthquake was simulated by repeating loading of triangle wave with fluctuating amplitude and 1Hz frequency. Some results were achieved from these tests. Compared with the static test, the flexural strength, initial Young's modulus and cracking strain were increased in dynamic test. The phenomena in the tests showed that the concrete wasn't destroyed immediately after it was cracked. The measured crack load was about 90% of the failure load. Besides, the fracture of large-size aggregates on fracture surface of specimens were also observed obviously. These results from the tests provide effective references for the seismic safety evaluation of structures such as high arch dam.

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.