查询词典 prestressed concrete

The design of elements under compression, shear and lateral load is discussed, as are reinforced and prestressed members and masonry walls acting compositely with reinforced concrete or steel structures.

The 设计，剪并且横向负载被讨论，与用加强的混凝土或者钢结构的被加强并且给预加压力的成员和泥瓦工墙表演compositely一样。

Properties of FRP materials have been improved by experimental and analysis on hybrid of two or three kinds of fiber, and various products have been manufactured accordingly. At the same time, the resin and equipment that are suitable for those FRP materials have been developed. A series of key applied techniques, such as strengthening of steel structures, masonry structures and concrete structures reinforced with prestressed FRP, lossless inspectability of structures and so on, have been developed though experimental research according to requests of engineering. There are four codes and guidelines for applying FRP techniques to construct foundational establishment. Among them, one technical specification was published in May 2003. It can be standardization of applying FRP materials on engineering. There have been more than one hundred engineerings strengthened with FRP materials since 1999 based on research and investigation of FRP materials and techniques.

在材料改性研究以及产品开发方面，通过纤维混杂改性，开发出适用于不同工程要求的单一品种纤维和混杂纤维的FRP产品及配套树脂材料、配套设备机具等；在关键应用技术开发方面，根据工程需要，开发出钢结构加固技术、砌体结构加固技术、预应力加固技术、结构无损检测技术等基础设施建设中应用FRP材料的关键技术；在规范标准编制方面，主持编制国家规范标准4项， 1项已获批准实施，其它3项正在按计划进行；在工程应用方面，应用自主开发的材料和技术，改造、加固工程100多项，创造了巨大的经济效益及广泛的社会效益。

To arrange the prestressed tendons and anchor devices on the web of box girder conveniently, a theoretical analysis, numerical calculation and model test on local stresses in concrete under anchor devices were performed separately using a typical segmental model, a subrange model and a similar model for the scheme design of Hutiaomen major bridge.

为便于箱梁腹板预应力筋及锚具的布置，结合虎跳门连续刚构桥的方案设计，对特征节段模型、子区域模型和试验模型锚下混凝土局部应力分别进行了理论分析、数值计算和试验研究。

Analysis of beams prestressed with unbonded tendon is much more complicated than that of bonded concrete beams.

无粘结预应力混凝土梁的分析要比有粘结混凝土梁复杂得多。

By comparing the value obtained by the ANSYSs calculation with data from experimentation, it arrives at a conclusion that the finite element model of nonlinear analysis of prestressed simple concrete girder with nobonded tenons is accurate and the method of simulant analysis is feasible.

最后，将ANSYS仿真计算结果与试验结果进行比较，表明本文建立的无粘结预应力混凝土简支梁有限元模型的正确性、仿真分析方法的可行性。

It is understand that the performance of prestressed simple concrete girder with nobonded tenons that is under the loading through the simulant calculation of this grider, which is in the way that researching stress, strain, sections distortion, relation of loading-deformation, crack and ect.

通过对有限元模型的全过程仿真分析，考察了无粘结预应力混凝土简支梁的应力和应变的变化状况、截面变形状况、荷载-挠度关系、裂缝变化过程等，从而了解了无粘结预应力混凝土简支梁的受力性能。

The result demonstrates that, the young's modulus and unit weight of concrete, pipe friction coefficient and deviation factor of prestressed reinforcement have large influence on the displacement of structure though influencing stress seldom, which can be chosen as the main design parameters of construction control accordingly.

参数敏感性分析表明：混凝土的弹模、容重、预应力筋的管道摩阻系数和偏差系数对结构位移影响较大，对应力的影响较小，可作为连续刚构梁桥施工控制中的主要设计参数。

In this paper, the RPC, instead of normal concrete, is used in railway prestressed T beam. Both the ANSYS finite element model analysis and the theory analysis verify structure's credibility and design's rationality and feasibility, based on which to emphasize the research to the local stress of the end block.

本文研究的主要内容是用RPC替代普通混凝土用于铁路预应力简支T梁，通过建立ANSYS有限元模型和采用初等桥梁结构理论分别进行计算，验证结构的可靠性与设计的合理可行性，在此基础上重点对端块局部应力进行分析与研究。

The method of calculating the bearing capacity of Normal Section in external unbonded prestressed beams is also suggested, which can be used to calculate the strength of concrete beams with straight unbonded tendons prestressing tendons and draped prestressing tendons with one or two support deviators.

计算结果表明，公式计算值与实测值接近，所建立的公式对直线预应力筋、具有一个转向块、两个转向块的折线形预应力等布筋方式的梁的承载力计算结果是能满足工程需要的。

The calculation formulas of friction losses in prestressed ring concrete construction is raised by the theory as compared with experiment.

通过理论和实验相比较，导出环向预应力摩擦损失的计算公式，该公式简单易算，避免使用传统的指数形式，且计算的结果与实验结果吻合较

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐