A new type of composite column, i. e. structural steel and concrete-filled steel tube (SCFT), was proposed. In the composite column, structural steel was embedded in concrete-filled steel tube (CFT). The mechanics of the composite columns were analyzed, including stresses, strains of concrete, steel tube and structural steel, and buckling of steel tube. The results show that the column has higher bearing capacity and excellent ductility. The ultimate bearing capacity and ductility of the column decrease with the increase of slenderness ratio. The strength of concrete depends on extremely the thickness of steel tube and sizes of structural steel. The distribution of strength of concrete varies with position in cross section even at the same load. Based on above analysis, formulas for predicting the strength of concrete and ultimate bearing capacity of the composite columns are suggested.

以分层地基模型并采用有限元2有限层的计算方法为基础建立起桩2土2承台梁的共同作用方程，通过计算程序分析了承台梁在其下不均匀土质、桩身差异、基桩刚度等因素影响下的受力状况，得出了一些有益的结论。

Fibre-reinforced plastic (FRP) materials have been thought as new innovative materials for concrete rehabilitation and retrofit, the bonding of FRP plate to reinforced concrete (RC) structure has been a popular method for strengthening deficient RC structure. This paper presents a finite element investigation into interfacial stresses in an FRP plate partially bonded concrete beam. The finite element results show that both normal stress and shear stress at the a middle to adhesive section are influenced by the material and geometry parameters and the length of debonding FRP plate of the beam

运用随机振动的时域复模态分析方法，对刚性结构房屋基础隔震体系在平稳随机地震激励下的响应进行了分析，得出隔震结构体系的地震反应统计特征。在此基础上，结合基础隔震结构均方响应和地震激励均方值之比与频率比、阻尼比的关系曲线以及基于失效概率下位移限值与频率比、阻尼比的关系曲线，提出采用图解法确定隔震装置合理优化的参数取值。

运用随机振动的时域复模态分析方法, 对砌体结构房屋基础隔震体系在平稳随机地震激励情形下的响应进行了分析, 得出隔震结构体系的地震反应统计特征。