内力

In this paper,the mechanical properties of the old PCC pavement structure overlaid with AC was analyzed with ANSYS,a software for finite element analysis,and the influence of interlayers,depth of AC-overlay and modulus of AC-overlay was taken account.According to the study it could be concluded that in order to retard the reflective cracking the interlayer should be put below the overlayer and the interlayer of high modulus can take effect well.

结合试验路实体工程，采用有限元方法分析了土工布、玻璃纤维网对旧水泥混凝土路面沥青混凝土加铺层复合式路面结构的内力影响，发现为防治旧PCC路面的接缝/裂缝在AC加铺层内产生反射裂缝，宜在加铺层底部铺设夹层，且模量较大的玻璃纤维网效果更好。

The general regularity of prestress, cracks and reaction are analyzed.

并对裂缝的出现、预应力及内力的变化规律作了相应的阐释。

At last, natural frequencies of practical pre-stressed composite space truss are tested with pulsatory method on construction site and its damping ratio is calculated, which gives another important data for engineering design. In addition, through the model experiment of pre-stressed rectangular square pyramid composite space truss, the correctness of characteristics of internal force and the feasibility of tension recovery method are proved.

最后，在工程施工现场用脉动法测试自振频率，并借助于振动衰减曲线和半功率点法计算出预应力组合网架——钢与混凝土的混合结构体系——的阻尼比，此又为工程设计提供了一理论依据；另外，通过正放四角锥预应力组合网架的模型试验，验证了结构内力分布特点的正确性以及张力松弛法的可行性。

By the method and procedure in this paper, the stress and strain of supporting structure are studied under the condition of different heaped load,excavation depth, excavation separatrix location and soil mass condition.

利用本文的计算方法及程序，分别计算分析了外加荷载不同、开挖深度不同、挖深分界不同、两侧土质不同等四种情况下支护结构的内力和变形。

Second, on the basis of classical girder theory, girder element stiffness matrix considering shearing deformation is deduced, the method of calculation of value of shearing deformation is illustrated, and how far effect on inner force and deformation considering sheering deformation is discussed. Through comparison inner force and deformation between considerations in shearing deformation and not, several results are achieved and several suggestions to calculation are pointed out.Third, prestressed reinforcement is considered in the paper.

其次，在经典梁理论的基础上，本文推导出考虑剪切变形的平面梁和空间梁单元刚度矩阵，阐述了剪切变形系数的计算方法，讨论了在不同箱梁截面高度情况下，剪切变形对结构内力值和变形值的影响，并与不考虑剪切变形影响的结果作比较，得出有关结论，并对工程设计计算做出了一些建议。

With an actual gymnasium of a long-span spatial steel-cable-membrane hybrid structure as the cal- culation model,both static and dynamic analyses were performed by employing the global analysis for the whole hybrid structure,and the substructural analysis for the truss arch substructure,and the cable-membrane substructure etc.,and the stresses and displacements of structural members were compared during global and substructural analyses.

在复杂的混合结构体系中，结构形态呈三维状态，在荷载作用下具有三维受力特征并呈空间工作'，，〕，结构之间的相互作用越来越不直观。同时，由于一些大跨度空间结构中包含了柔性部分，使结构的几何非线性行为成为必须考虑的因素，从而结构构件的内力改变与边界条件、荷载的变化关系就更加难以估计。

The theory implies that the body is capable, through energy exchange, to short-circuit the system by ingesting its own secreted body fluids to stimulate the transmutational forces within and challenge the body to transform unusable substances into usable ones.

这理论意味着，身体有能力，通过能量交换，通过喝他自己分泌的体液去短路系统去刺激转变内力和激发身体去转变不能使用的物质为能用物质。

A computer method is presented in this paper for the bending analysis of unbonded prestressed concrete structures after cracking.

这种结构是一种内部超静定结构/它在混凝土未开裂时，其内力计算可以采用结构力学的方。

An improved spring-mass model is proposed, by which 2D→3D transformation and simulation of garment are formulated unifiedly. The dynamic system of modeling and simulation is derived and solved using time differentiate method, with given composition and expression of internal and external cloth forces in the formulation. And then the simulation algorithm is described.

利用该模型统一建立了2D→3D映射和服装真实感模拟方程，给出方程中质点所受内力和外力的组成与表达式以及动态系统的推导和求解过程，并且描述了模拟的具体实现算法。

And the design method for U-steel yieldable support and combined structure of steel and concrete is discussed.

论文首先介绍了地下工程支护结构理论的发展及其研究现状；结合五轮山煤矿施工现场，论文采用超静定结构力学计算方法、有限元的分析方法，主要对浅埋强风化段支护结构进行了力学分析；在总结现有文献研究成果的基础上，分析了型钢与混凝土的粘结机理，介绍了U型钢可缩性支架缩动前后的内力计算方法，讨论了考虑U型钢可缩性支架稳定性的承载能力问题，阐述了U型钢可缩性支架参数选择的原理。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。