梁

This paper begins with an analysis of the bearing force of the door-shaped hanger and the trajectory courses, and then makes a detailed study of the different causes for the crevices in them.

从门型吊承轨梁的受力分析入手，研究剖析了原结构产生裂纹的诸多原因，通过理论计算，做出了承轨梁与桁架连接接点的最佳设计，提出了符合现场实际情况的更换承轨梁的最佳方案，为类似设备改造提供了可借鉴的经验。

Calculation formula of height-span-ration of supported beam can be directly deduced through controlling local stress in the end of the wall beam.

本文作者运用弹性地基梁理论及《砌体结构设计规范》中关于墙梁设计的有关规定，通过控制墙端局部压应力，可直接推导出托梁高跨比的计算公式。

The pylon of a cable-stayed bridge without backstays acts as a cantilever beam to resist loads from the girder transferred by stay cables, therefore, the pylon shaft is made incline to form a kind of equilibrium system of girder-pylon structure.

无背索斜拉桥结构主塔作为悬臂梁来抵挡斜拉索传递的梁面荷载，因此将塔身倾斜组成了梁塔结构的平衡体系。

In the end, Based on the conception that the simple beam at ultimate rotates rigidly around the plastic hinge in the midspan when the beam fails because of bending, the formula for calculating the stress in the external tendons and the ultimate anti-bending capacity of the beam in the cases of different deviators have been developed.

最后，基于抗弯承载力极限状态下的简支梁可视为梁体绕跨中等曲率塑性铰发生刚性转动的假设，推导了在各种转向块布置情况下求体外预应力筋的变形和梁的跨中挠度，进而求得梁的极限弯矩的简化公式。

The finite element model included two types of main element: beam element for concrete and truss element for internal unbonded or external tendon. The end nodes of main elements were connected with internal constraints named MPC in ABAQUS. Spring elements with very large stiffness were set up at the place of the deviators of externally prestressed beams, or along the span with relatively little space of unbonded internally prestressed beams. The modified Riks method is utilized to trace the entire structural response of beams prestressed with unbonded tendon from zero to ultimate loads. The reliability of the analysis model is verified by analytical results of typical test beams in comparison with experimental ones.

该有限元模型由两类主单元组成，即混凝土梁单元和体内无粘结或体外预应力筋桁架单元；主单元的端部节点用ABAQUS的内在约束MPC连接；在体外预应力梁的转向块处，或沿体内无粘结预应力梁全跨并以比较小的间隔设置刚度足够大的弹簧单元。

The tensile stress at flange plate of new girder is 2.67 MPa under creep effect aroused by shrinkage stress and self-weight stress of new girder in 3 a, which may lead to concrete crack.

在新梁混凝土的收缩应力和新梁自重应力的徐变作用下，3a后新梁翼板的拉应力为2.67MPa，可能会引起混凝土开裂。

In this paper, the author first set force the conception, structural style, characteristic and development survey and so on of the beam transfer floor structure, and focus on the analyse of stress characteristic of prestressed concrete transfer beam structure at large, and recommend the design of major project briefly, then carry on the research of the construction technology of large span prestressed concrete transfer beam structure home.

本文首先简要阐述了梁式转换层的概念、结构形式、特点及发展概况等内容，重点对预应力混凝土转换梁结构的受力特点作了较为详尽的分析，并对其重点项目的设计做了简要的介绍，然后对大跨度预应力混凝土转换梁结构的施工技术进行了深入的研究。

FFB series quick installation basin type simplifies the design and the construction of the girder and the frusta, and saves the investment

FFB系列快装盆式支座通过高摩擦系数橡胶板与梁体、墩台连接，梁体和墩台设计中无需特殊结构，简化了梁体和墩台的设计与施工，节约了投资。

This paper introduces the calculation process design of ground anchor end -beam of continuous reinforcement concrete road surface, analyzes the influence on end -beam internal forces caused by plate thickness, beam height, soil inner friction angle and road bed soil cohesion.

介绍了连续配筋混凝土路面端部地锚梁计算流程设计，分析了板厚、地锚梁高度、内摩擦角以及路基土粘聚力等因素对地锚梁受力状况的影响，并得出了结论。

But quite amount of cracks are found during the construction and operation in the PC box girder bridges, especially cracks in the anchorage zone and the inclined cracks in the box girder webs of the bridges, and some longitudinal cracks appear indeed in the deadweight phases,Moreover the variant Pre-stressed strand arrangements produce great influence for the inner inforce of the b

但目前在用预应力混凝土箱形梁的施工和运营过程中出现相当数量裂缝病害，尤其是箱梁锚固区裂缝、腹板斜裂缝，顶板纵向裂缝，有的甚至在未承受活载的自重阶段就出现裂缝，而不同的预应力布束方式对箱梁内力有很大的影响。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。