内力

The paper includes:The author calculate the structures inner force and displacement of the free end , analyze the influence of the height and the value of pretress of cable by making use of ANSYS 9.0 soft, pose the concept of critical prestress,conclude the function relation between displacement of the free end, initial strain and the height of cable ,analyze the dynamic properity and point out that Newmark-β method should be adopted when we analyze the dynamic properity of the cable-stayed spatial structure with direct integral test to guarantee the contribution of high mode,finally conclude the functional relation among coefficient of earthquake inner force, initial strain and the height of cable, wish to get some helpful conclusion applied to cable-stayed spatial truss design.

本文系统介绍了斜拉空间桁架竖向地震反应的分析理论与方法、详细分析了斜拉空间桁架结构在静力和竖向地震作用下的受力性能，主要内容包括：利用通用有限元软件ANSYS9.0计算了斜拉空间桁架在静力和竖向地震作用下内力及自由端位移分布规律并得出地震内力系数与节间位置、预应力以及斜拉索高度之间的函数关系；详细分析了斜拉索中施加的预应力以及斜拉索高度的变化对于该种结构内力及自由端位移的影响并提出了斜拉空间桁架的临界预应变概念，进而得到了自由端位移与初始预应变以及斜拉索高度的函数关系，即：△=-(40h+2180)ε+9.8；分析了该种结构的动力性能，并指出：在时域内采用直接积分法计算该种结构的动力响应时，应该考虑采用不引起振幅率减小的Newmark-β法，以保证高阶模态响应的贡献仍然保留在响应中而不致于被忽略。

In this paper the features of constructional details and behaviors of double thin-wall piers of continuous rigid frame bridges were firstly analyzed. According to the condition of deformation compatibility, a relationship between the inner forces on the coping of pier and the single inner forces of the double thin wall pier was established.

本文首先从双薄壁墩的结构和受力特点出发，根据主梁与双薄壁墩的共同变形协调条件，建立墩顶内力与双薄壁桥墩单墩内力之间的关系，考虑强度和稳定约束，建立基于通用有限元程序的双薄壁墩墩中距和壁厚的优化数学模型。

The internal force yield condition is a close and convex curve and can correspond to the symmetry of internal force.

该内力屈服条件是一条闭合的外凸曲线，符合内力分量的对称性，在材料拉压强度相同时蜕化为屈雷斯卡内力屈服条件。

The handworker counting consists of several aspects, included preliminary selection of member size, counting model of frame, loads counting, lateral displacement counting of transverse frame, internal force analysis of horizontal loads and vertical loads, internal force combinations, design of section, check design of the foundation.

其中手算部分计算书的主要内容为构件尺寸的初步确定、框架的计算简图、荷载横向侧移计算、框架在水平及坚向荷载作用的内力分析和计算、内力组合、截面设计及基础设计。

The headframe structure studied is composed of two trusses in the direction parallel to the hoisting load, and two rigid frames in the perpendicular direction.

按桁架框架型井架在断绳荷载作用下，考虑扭力计算与不考虑扭力计算，其结果，平行于钢丝绳力方向的桁架内力可减少10～20%左右；垂直于钢丝绳力方向的框架内力则增加100%(即，若不考虑扭力计算框架时无内力)。

The results of lattice beam internal force calculated method based on double parameter groundsill model are more approach the experiment measured values because of consideration of the pass of shearing force in soil, and its calculated workloads are similar with the method of winkler elastic foundation. Besides, the thesis also discusses the moment of torque affected results on node stress situation and the correction of stress value at the bottom of cross node of lattice beam. Due to the repeat calculation of node area during internal force calculation, the stress value of the bottom of beam is lower, this may lead the calculated value unsafe, but the corrected stress value will more approach to practical situation.

对格构梁的内力计算提出基于双参数地基模型的格构梁内力计算方法，其计算结果表明，双参数地基模型上的格构梁内力由于考虑土中剪力的传递更加接近于试验实测值，其计算工作量与winkler弹性地基梁法相当，此外，文中还探讨了扭矩作用对格构梁节点受力情况的影响结果以及格构梁交叉节点底部的应力值的修正，由于内力计算过程中节点处的面积被重复计算，使得梁底应力偏小，可能导致计算结果的偏于不安全，修正后的应力值更接近于实际情况。

The loading program, by which the load can be directly applied to the internal force influence surface, is generated and used to get the result of loading on the influence surface. Through comparing the result of loading on the internal force influence surface of assembly skew hollow slab bridge with the one of the perpendicular bridge, the reduction factor method is offered and its corresponding reduction factor can be obtained.

编制了内力影响面加载程序实现对内力影响面的直接加载；在此基础上，通过参数分析，对比装配式正交空心板桥和斜交空心板桥内力影响面加载的结果，提出斜交空心板桥设计计算的折减系数法，并给出相应的折减系数。

Based on it, the research content of this dissertation has been determined. Tuan Shan River Bridge is selected as an example and APDL is used to analyze the elastic properties. After calculating the internal force influence surface of assembly skew hollow slab bridge, the internal force-controlling section is attained; the transverse distribution of internal force is studied and the transverse distribution coefficient is parametric analyzed. Based on the results, relation formula of transverse distribution coefficient between skew and perpendicular bridges are fitted. Practical calculation method for the internal force calculation of assembly skew hollow slab bridge is offered. Some conclusions are drawn from comparing and analysing the internal force, bearing reaction and deformation of both assembly and monolithic skew slab bridges.

本文对装配式斜交空心板桥的发展现状进行了综述，从此出发，确定了本文的研究内容，以团山河大桥为工程背景，采用ANSYS 提供的参数化语言APDL，对装配式斜交空心板桥弹性特性进行全面分析，计算了装配式斜交空心板桥的内力影响面，得到内力控制截面；同时计算了内力的横向分布影响线和横向分布系数，并对内力横向分布系数进行了参数分析；基于参数分析的结果，拟合了装配式斜交空心板桥与对应正交桥内力横向分布系数的关系式，为装配式斜交空心板桥的内力计算提供了实用计算方法；对比分析了装配式斜板桥与整体式斜板桥的内力、支座反力以及变形特点，得出了一些有益结论。

The present paper mainly pressurizes take the auto-adapted machinery in endogenic force the installment to carry on F=-1 as the object ten poles endogenic force to pressurize the installment to allow the movement chain is comprehensive, understood the endogenic force pressurizes the auto-adapted mechanism concept and the related characteristic, discovers the endogenic force to pressurize the auto-adapted mechanism movement chain degree of freedom characteristic.

本论文主要以自适应机械中的内力加压装置为对象进行F=-1的十杆内力加压装置的容许运动链综合，了解内力加压自适应机械装置的概念及有关特性，找出内力加压自适应机械装置运动链的自由度特性。

Thereinto, exterior drive mostly arises from the change of competition mode and custom demand, and inside drive includes up-and-up internal force, culture internal force and desire internal force, and the black hole which result from enterprises plough vast capital into information technology compel enterprises to reengineer its business process.

其中，外部动力主要是由于竞争方式与顾客需求模式的变化所引起的，而内部动力则包括企业内部的趋好内力、文化内力以及欲望内力以及企业对于信息技术的巨额投入所引起的&黑洞&迫使企业实施再造。

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％。