相邻边自由另两边任意支承矩形厚板的精确解

选取由三角级数和多项式组成的挠度函数ｗ（ｘ，ｙ）和应力函数Ψ（ｘ，ｙ），得到相邻边自由另两边任意支承矩形厚板的精确解、它不需要繁琐地叠加．文中给出矩形悬臂厚板的一个数值例题．     

正交各向异性矩形板弯曲问题的一般精确解

选择由三角级数和多项式组成的挠度函数ｗ（ｘ，ｙ），这个挠度函数满足正交各向异性板的控制微分方程、全部边界条件或角点条件，从而得到正交各向异性矩形板的一般精确解，不需要繁琐地叠加．文中还讨论了板上的支承点问题．     

矩形悬臂厚板弯曲问题的精确解

选取由三角级数和多项式组成的挠度函数 w(x,y)和应力函数ψ(x,y),得到求解在均布荷载作用下,矩形悬臂厚板的线性代数方程组。它满足厚板的控制微分方程和全部边界条件,从而得到精确解。不需要繁锁地叠加。     

弹性地基上四边自由正交各向异性矩形板的一般精确解

本文利用Ｆｏｕｒｉｅｒ双三角余弦级数和单三角余弦级数，讨论和分析了弹性地基上四边自由正交各向异性矩形板的弯曲问题。挠度函数ｗ（ｘ，ｙ）ｍ足自由边总剪力、弯矩边界条件和自由角点条件，从而得到问题的精确解。文中给出了数值算例。     

弹性平面问题中的位移函数

由弹性平面问题的Ｎａｖｉｅｒ－Ｌａｍｅ方程组．得到如下位移分量公式这里Φ（ｘ．ｙ）是位移函数．它满足重调和方程Φ，ααββ＝０．同时还得到应力分量同位移函数之间的关系式．文中用两个解析函数表示该位移函数．并导出它们同位移场和应力场之间的关系，这样就可能用复交函数方法来求解弹性平面问题．本文还用位移函数计算了一些例题。     

广义Lienard系统解的终归一致有界性

讨论非线性非自治系统ｘ＝ｈ（ｙ－Ｆ（ｘ，）＋Ｅ（ｔ）；ｙ＝－ｇ（ｘ）的解的一致有界性，得到了此系统的解终归一致有界的充分条件，进而获得存在周期解的条件，改进和推广「１－５，８，１０」的结果。     

平面自治系统的周期解的存在性

本文研究一般平面自治系统ｘ＝ｐ（ｘ，ｙ）ｙ＝Ｑ（ｘ，ｙ）的非零周期解的存在性问题，获得了保证此系统存在非零周期解的充分条件，所得结果推广和改进一些已知结论。     

关于弹性地基上厚板弯曲的某些问题

本文从厚板的内力特性出发,把Winkler地基或Pasternak地基上各种厚板模型的基本方程求解问题变为求解两个位移函数ω及ψ的问题,并导出解的一般形式。然后证明,对于弹性地基上简支多边形厚板,ψ恒为零,其基本方程组就化为一个位移函数ω的四阶偏微分方程,而这个方程与Pasternak地基上弹性薄板弯曲的方程是完全类似的。此外,文中还研究了弹性地基上厚圆板解的问题。     

一类广义Lienard系统零解全局渐近稳定性

研究如下非线性微分方程｛ｘ＝Φ（ｘ）ｈ（ｙ）－Ｆ（ｘ）Ｐ（ｘ，ｙ） ｙ＝－ｇ（ｘ）Ｑ（ｘ，ｙ）得出了（１）三个无环的充分条件和两个全局稳定性定理，这些结果推广了文献「１」的结果。     

深基础沉降计算的等效压缩变形系数

本文根据弹性理论竖向应力分布的计算公式，通过引入等效压缩变形系数ψｃ，将复杂的Ｍｉｎｄｌｉｎ解签应力计算过程简化为对Ｂｏｕｓｓｉｎｅｓｑ解答应力的计算，并且给出了可供深基础沉降计算实用的ψｃ值表格及修正公式。     

两对边固定两对边自由矩形板的精确解

基于 Kirchhoff薄板理论,提出双三角级数形式的挠度函数,求得了两对边固定两对边自由矩形板的精确解,计算结果表明这种解法收敛速度快,计算精度高,易于工程应用．     

全加劲两侧开缝钢板剪力墙弹性屈曲研究

采用有限元方法对全加劲两侧开缝钢板剪力墙在面内水平荷载作用下的弹性屈曲临界荷载、屈曲模态进行了研究。对影响其弹性屈曲性能的参数进行了分析,包括两侧和中部加劲肋与墙板的刚度比、两侧和中部加劲肋宽厚比以及墙板高厚比和边长比。给出了全加劲两侧开缝钢板剪力墙加劲肋的弹性屈曲设计参考公式,为开缝钢板剪力墙的应用提供依据。     

浅谈建筑边角的施工

建筑边角往往是施工中容易被忽视的薄弱环节。本文根据多年来质量监督的经验，对建筑边角的施工要点作了概述。     

具有边梁加固的板的弯曲

建立了具有边梁加固的板弯曲的数学模型，并给出平衡微分方程和边界约束条件的完整形式，同时分析了解的存在性、唯一性。     

Approaches to Forest Edges as Dynamic Structures and Functional Concepts

In cultural landscapes within temperate regions, forest edges - the transitions or edges between forest and open landscape - can comprise specific habitats. Forest edges are the result of the interaction between cultural land use and the dynamic properties of edge vegetation. Forest edges are of potential interest for multiple - use landscape planning and may be protected and promoted within forest policies. Different approaches to describing and understanding forest edges are presented. The influence of cultural land use and landscape dynamics on the physical structure of forest edges in the landscape is emphasized. Forest edges are compared to other types of edge habitats. Functional edge concepts from landscape ecology (edge effects, ecotones and boundaries) are reviewed, focusing on the role of edges at a landscape scale. The different approaches merge to the conclusions that origin, structure and function of forest edges are closely interrelated; edges are relative concepts and need to be studied and defined in relation to a specific purpose and scale; forest edges are highly dynamic in space and time; processes at edges can influence processes in the entire landscape; and the dynamic properties of edges can best be understood if studied at a landscape scale. A landscape perspective to edge management is suggested.     

Approaches to Forest Edges as Dynamic Structures and Functional Concepts

In cultural landscapes within temperate regions, forest edges - the transitions or edges between forest and open landscape - can comprise specific habitats. Forest edges are the result of the interaction between cultural land use and the dynamic properties of edge vegetation. Forest edges are of potential interest for multiple - use landscape planning and may be protected and promoted within forest policies. Different approaches to describing and understanding forest edges are presented. The influence of cultural land use and landscape dynamics on the physical structure of forest edges in the landscape is emphasized. Forest edges are compared to other types of edge habitats. Functional edge concepts from landscape ecology (edge effects, ecotones and boundaries) are reviewed, focusing on the role of edges at a landscape scale. The different approaches merge to the conclusions that origin, structure and function of forest edges are closely interrelated; edges are relative concepts and need to be studied and defined in relation to a specific purpose and scale; forest edges are highly dynamic in space and time; processes at edges can influence processes in the entire landscape; and the dynamic properties of edges can best be understood if studied at a landscape scale. A landscape perspective to edge management is suggested.     

钢筋混凝土承台边,角桩受冲切计算

本文对《建筑桩基规范》（ＪＧＪ９４－９４）和《钢筋混凝土承台设计规程》（报批稿）中关于承台在边桩和角桩上受冲切承载力计算条文规定的内容及背景材料作了介绍，并用例题对设计计算方法作了演示。     

四边固支扁球壳的解析解法

以弯矩理论的单级数形式解析解为基础，应用迭加原理和将无穷级数展成无穷线性方程组的方法，得出均布荷载作用下四边固支扁球壳的闭合解。此解数学、力学模型简单、明确，使计算简化且能控制误差。     

光塑性方法在平行刃剪切机张力剪切过程中的应用

用光塑性方法对低碳钢金属材料在张力冷剪过程中的弹塑性应力状态进行了研究，为张力剪切方法的具体应用和张力剪切力学模型的建立提供了依据；并讨论了三维光塑性．