查询词典 prestressed concrete

Micro expand concrete in the closed steel tube could counteract concrete shrink, and make concrete prestressed. As the result, it improves concrete intensity.

微膨胀混凝土在钢管拱桥中能够抵消混凝土本身的收缩，并使混凝土初始处于受压状态，从而改善混凝土的力学性能，因此在钢管混凝土拱桥中得到广泛应用。

Based on prestressed steel beams, considering effect of the method of construction to slip and stress increment, accoding to conception that procedure of calculation reflects the procedure of construction and change of structural internal force, making good use of the method of section conversion and making iteration reflect the coupling of slip and stress increment, bringing forth a method of iteration and modified stiffness to calculate the deflection of prestressed composite steel-concrete beams in normal servicing prase.

以预应力钢梁为基础，充分考虑施工方法对结构滑移和应力增量的影响，依据设计计算中反映施工过程和结构受力变化过程，通过截面换算，以循环迭代法来考虑滑移和预应力钢束的耦合作用，提出了计算预应力钢—混凝土组合梁正常使用阶段挠度变形的迭代—修正刚度法。

So we suggest in design of the jacketing steel reinforced concrete frames prestressed with bonded tendons for storey-adding, in the area of earthquake fortification intensity of degree 8, steel reinforced concrete frames prestressed with bonded tendons situated in Class II and III soil with the height of ground floor is 8.1m and the number of added stories is 2 to 4, multiplying coefficient of bending moment of column, detail of seismic design of beam, column, and joint, should conform to a higher one earthquake-resistant grade.

建议套建增层预应力钢骨混凝土框架结构设计时对于8度抗震设防区建造在II、III类场地土上的底层结构层高为8.1m，增层层数为2层到4层的原二级抗震框架其柱端弯矩增大系数及相应的梁、柱、节点的抗震构造措施应按一级抗震框架取用。

The processing technique and technology of prestressed reinforcement and rubber component are based on the combination notion by making full use of intrinsic structure and performing feature of rubber to manufacture the rubber into batten, and using the experience of prestressed reinforcement concrete technology to change the rubber battens into prestressed reinforcement and rubber component.

目前道路路面工程和使用中存在的问题为了说明&预应力钢筋橡胶构件&作为路面材料，具有优于现在普遍使用的沥青和水泥混凝土路面材料的特点，有必要了解目前国内外主干道公路路面材料所使用的沥青和水泥混凝土两种路面材料的特性和存在的问题。

The flexural capacity, deformation and failure modes of beams with different parameters can be analyzed using the program, such as types of plan and prestressed tendons(extrenal prestessed tendons, internal unbonded prestressed tendons, internal bonded prestressed tendons), jacking and effective stress in external prestressed tendons, configuration of the deviators, properties of tendon, ratio of span to effective depth of the beam and load pattern, initial loading state at tendon jacking, etc.(3) Nonlinear behaviors of the concrete beam prestressed with external or internal unbonded tendons were studied by the program developed.

本程序可以对任意截面型式的预应力(体外预应力筋、体内无粘结预应力筋、体内有粘结预应力筋)混凝土梁和普通钢筋混凝土梁进行非线性全过程数值分析计算，程序可以就转向块的布置方式、体外预应力筋纵断面形状、体外筋有效预应力的大小及材性、张拉预应力筋时梁的持荷状态等因素对体外预应力混凝土梁在外荷载作用下的强度、变形特征、破坏模式等的影响进行分析研究。

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。

Through analyzing Gaya prefabricated box girder bridge, a comprehensive summary of production from the box girder pedestal, vertical mold, concrete pouring, to the tensioned prestressed steel beams, grouting, sealing anchor the whole process of construction technology, providing the corresponding construction methods, concrete mix, vibrated time, and prestressed tension and other technical data.

通过对嘎呀河大桥箱梁的预制，全面总结了从箱梁台座制作，立模，混凝土浇筑，到预应力钢束张拉、灌浆、封锚全过程的施工工艺，提供了相应的施工方法、混凝土配合比、振捣时间和预应力张拉等各种技术数据。

Through analyzing Gaya prefabricated box girder bridge, a comprehensive summary of production from the box girder pedestal, vertical mold, concrete pouring, to the tensioned prestressed steel beams, grouting, sealing anchor the whole process of construction technology, providing the corresponding construction methods, concrete mix, vibrated time, and prestressed tension and other technical data.

预应力混凝土箱梁预制施工技术及质量控制，工程建筑论文，工学论文通过对嘎呀河大桥箱梁的预制，全面了从箱梁台座制作，立模，混凝土浇筑，到预应力钢束张拉、灌浆、封锚全过程的施工工艺，提供了相应的施工方法、混凝土配合比、振捣时间和预应力张拉等各种技术数据。

For the long span prestressed concrete continuous bridge adopting cantilever erection construction method,it was important to make sure the quality and security of segment No.

采用悬臂拼装施工的大跨度预应力混凝土连续梁桥，因0号块梁段的构造和受力较为复杂，保证它的质量与安全非常重要。

This paper presents the design, construction and test peculiarities of theChongqing Yangtze River Bridge, a prestressed concrete T-frame bridge of cast-in-place cantilever segmental construction.

本文扼要介绍重庆长江大桥预应力T型刚构的设计、施工和检验。

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