钢筋混凝土的

Pre-stressed composite space truss is one of the new kind of space structure systems developed on the basis of prestress and space truss, which consists of steel and reinforced concrete. At present the study in this field is just being begun in our country. Therefore, in this paper static and dynamic performances of pre-stressed composite space truss associated with a practical engineering are studied, in addition, dynamic test on construction site and model experiment are done. Finally, we conclude this structure is well in stress and stiffness and dynamic characteristics.

预应力组合网架是一种基于网架和预应力技术发展起来的由钢和钢筋混凝土组合而成的新型预应力空间结构体系，目前国内在此领域的研究和应用都较少，为此，本文结合实际工程对预应力组合网架进行了静力和动力的分析研究，并作了施工现场的动力测试及模型试验，总结出预应力组合网架受力比较合理，刚度、动力特性好，是值得推广的一种空间结构形式。

Real estate experts, the general quality of the new premises cracks some common and not harm to the main structure, the maintenance could be solved; There are not easy to handle the cracks, some of the concrete itself may be limited, quality problems, and even reinforced their intensity and laying spacing problems may affect the useful life of housing, serious security problems will occur.

房产专家介绍，新房裂缝有些是一般的质量通病，不伤及到主体结构，维修就可以解决；还有的裂缝就不好说了，有的可能是混凝土本身的配比、质量有问题，甚至钢筋本身的强度和铺设的间距有问题，有可能影响房屋的使用年限，严重的会发生安全问题。

There are much confusion when Microsoft releases Windows Vista Service Pack 1 RC Refresh 2 (RCR2) was released, due to the fact that the supposedly 'release candidate' does not bear the "Evaluation Copy" watermark as with previous beta release, no more expiry date, and comes with a RTM fingerprint 6001.18000.x86fre.longhorn_rtm.080118-1840 and 6001.18000.080118-1840 which similar to final build number of Windows Server 2008 as its build version.

有许多混乱时，微软发布的Windows Vista Service Pack 1的钢筋混凝土刷新2（ RCR2 ）被释放，由于这一事实，即所谓'发布候选'不承担"评估副本"水印与以前的测试版，没有更多的有效期到目前为止，配备RTM指纹6001.18000.x86fre.longhorn_rtm.080118 - 1840年和6001.18000.080118-1840类似最终建立一些Windows Server 2008的作为其建设的版本。

People often sigh with regret, live in the people of modern city, lack contact more and more, devoid each other is trustful, as economic development, people appears more and more " of unlike " life the person in the society, and the slave that takes off the basket that the ground is about to become a ferroconcrete to build alive.

人们常常慨叹，生活在现代都市的人们，越来越缺乏交往，缺乏相互的信任，随着经济的发展，人们似乎越来越不像"生活"在社会里的人，而活脱脱地快要成为钢筋混凝土构筑的笼子的奴隶了。

If where " ferroconcrete structure " the study method that course develops a student effectively, strengthen a student to analyse problem and the ability that handle an issue thereby, the method is varied, need us to be explored actively in teaching practice, apply integratedly, in order to enhance the ability that graduate gets used to the job, realize " to be the education target of oriented " with obtain employment thereby.

如何在《钢筋混凝土结构》课程有效地培养学生的学习方法，从而加强学生分析新问题和处理新问题的能力，方法是多种多样的，需要我们在教育实践中积极探索，综合运用，以加强毕业生适应工作的能力，从而实现"以就业为导向"的教学目标。

Above all, consider combination of 3 kinds of load and different constant load and alterable load effect to compare an effect, gave out representative ferroconcrete component is in give an environment to fall, the affirmatory principle that the reliability of different operating period analysed methodological; to put forward intended performance structure to design reliability level, namely index of reliability of component part of the construction inside intended performance cannot be under the standard; of active standard on foundation of expression of design of reliability of our country structure introduce wear to fold decrease coefficient, gave out the affirmatory method of this coefficient, assure in design phase through this coefficient and achieve target of reliability of component part of the construction inside intended performance not the standard under active standard.

首先，考虑三种荷载组合以及不同恒荷载和可变荷载效应比影响，给出了代表性钢筋混凝土构件在给定环境下、不同使用期的可靠度分析方法；提出了预期使用期结构设计可靠度水平的确定原则，即预期使用期内结构构件可靠度指标不能低于现行规范的标准；在我国结构可靠度设计表达式基础上引入耐久性折减系数，给出了该系数的确定方法，通过该系数在设计阶段保证和实现预期使用期内结构构件可靠度指标不低于现行规范的标准。

So, in this thesis, discussing the interrelated theory and by using finite element method,fixed Supported Square Plates with openings for different location and size of the openings are investigated. The mechanics rule of plates after openings are presented. A comparison is made for the above plates and the plates supported in three sides and the cantilever of plate in approximate boundary conditions. Some approximate results are obtained.

为此，本文论述了钢筋混凝土板的相关理论并用ANSYS软件分析了四边固支开孔板在不同开孔位置和形状、不同开孔面积的情况下内力的改变，获得了内力改变的规律，并和三边固支板、悬挑板在近似的边界条件下的受力倩况进行比较，得到一些相近的结果。

For the first time, a checking point method is proposed by using equivalent logarithmic normal probability distribution, and its application is studied for calculating durability reliability of reinforced concrete structures.

根据在役结构的特点，提出了用对数正态分布拟合未知概型的随机变量的方法；首次提出了当量对数正态型概率分布的验算点法，并研究了其在钢筋混凝土结构耐久性可靠度中的应用；对功能函数非线性引起的误差进行了深入的研究，提出了误差判别方法。

The hole building technology of cast-in-site bored pile in riprap layer;2. Technical key points are summarized for hole building ,steel reinforcement cage construction and concrete pouring in order to increase construction quality of cast-in-place bored pile.

从工程现场施工和质量控制的角度，对钻孔灌注桩施工中存在的问题进行了探讨，总结了现场成孔技术要点，重点研究了钢筋笼的施工和混凝土的灌注，以提高钻孔灌注桩的施工质量。

Pereira Associates. Geisel Library, the main library on the campus of the University of California in San Diego, is a highly sculptural building constructed of reinforced concrete and glass, materials closely associated with much of Pereira's work.

Pereira 事务所设计了一座大学图书馆， Geisel图书馆，加州大学圣迭戈分校校园中的主图书馆，是一个高度雕刻的钢筋混凝土和玻璃为主材料的建筑，材料严格按照Pereira的设计要求。

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