钢筋混凝土的

This article discusses the mechanism and factors of concrete carbonation of the reinforced concrete structures, and sums up a few models of concrete carbonation depth.

文中讨论了钢筋混凝土结构的混凝土碳化机理及碳化速度的影响因素，总结了混凝土碳化深度的多种计算模型。

Main body steel structure forms the overall giantism space shape of a saddle steel truss weaving dyadic "bird nest" structure , steel structure always uses steel amounts to be 42,000 tons , mark, concrete bleachers having been , is hit by , three tiers down, bleachers concrete structure is 7 tiers of ground armoured concrete frames- shearing force wall structure system undergroundly 1 tier.

主体钢结构形成整体的巨型空间马鞍形钢桁架编织式"鸟巢"结构，钢结构总用钢量为4.2万吨，混凝土看台分为上、中、下三层，看台混凝土结构为地下1层，地上7层的钢筋混凝土框架-剪力墙结构体系。

No matter axial pressing or small eccentricity pressing of CFSTRC, it can be concluded such conclusions as following.(1)Compared with normal concrete filled steel tube, the CFSTRC has better ductibility and limited load-carrying capacity. The outer reinforced concrete offers much help to yield load and limited load.

可以得出，无论是轴心受压还是小偏心受压：(1)钢管高强混凝土核心柱比普通钢管混凝土柱具有更好的延性和承载能力，核心柱外围钢筋混凝土对屈服荷载和极限荷载的贡献较大。

In the test research of the most radical plane column-beam joint specimens are done, so the feasibility and the problem for this construction method could be discussed.

基于此，本文有针对性的对轴压比、剪压比及梁柱混凝土强度级差进行控制，设计并完成了7个按梁混凝土强度浇筑的钢筋混凝土平面框架节点的低周反复加载试验，通过量测各试件节点区水平箍筋以及贯穿节点的梁、柱纵筋在不同受力阶段的应变等，综合分析了各个试件的延性、耗能性及梁柱纵筋的粘结退化状况，考察了节点核心区采用梁混凝土浇筑后对试件综合抗震性能的影响。

The steel structure of the main body forms the whole giant spatial saddle-shaped steel truss knitting type "the bird nest", the steel structure totally uses the steel quantity is 42,000 tons ,the concretes stand divides into upper, middle and lower three, the stand concrete structure is underground 1 ,on the ground 7 floor of reinforced concrete frame - shear wall structural system.

主体钢结构形成整体的巨型空间马鞍形钢桁架编织式"鸟巢"结构，钢结构总用钢量为4.2万吨，混凝土看台分为上、中、下三层，看台混凝土结构为地下1层，地上7层的钢筋混凝土框架-剪力墙结构体系。

For finding the best work function of SCC, SCC is requested to have favorable filling performance, rebar clearance passing performance and cohesiveness, and prevented from bleeding and segregation under the premise of assure that SCC"s flowing property due to by dint of rheology theory and analyse mechanism on concrete"s vibrationless moulding and compact.

为了得到自密实高性能混凝土的最佳工作性能，在研究中借助流变学理论，分析研究了混凝土拌合物免振捣成型和密实的机理，在保证自密实混凝土流动性的前提下，要求混凝土具有良好的填充性、钢筋间隙通过性和粘聚性，防止泌水、离析，解决了流动能力与抗离析能力的矛盾。

It may be of timber or of steel joists encased in concrete, of reinforced concrete or plain concrete without reinforcement.

它可以用木料或埋在混凝土里的钢梁，也可以用钢筋混凝土或不配筋的素混凝土。

In construction of Aquaria in Chengdu Hubao Ocean World,concrete of raft board (including ocean exhibition pool,coral pool and life-maintaining system pool) adopts seamless construction technology.

在成都虎豹海洋世界的水族馆工程施工中，为确保钢筋混凝土结构的耐久性，筏板(包括大洋展示池、珊瑚池及维生系统池等)混凝土采用无缝施工技术，在混凝土中加入CH-ASEA膨胀剂和合成纤维，取得了筏板混凝土成品无细裂纹的效果。

Taking Xiaoxi Bridge as an example,the thesis brings forward the economical 、simple 、construct-convenient 、light-tonnage prestressing technique.According to Yi'an bridge in Chongyi,on the twenty-meter long beam,certain load, the low prestressing concrete takes a all-around contrast with the full prestressing concrete and steel-reinforced concrete.

本文以小溪桥为工程背景，提出了适合低预应力混凝土的经济实用、工艺简单、便于施工的小吨位预应力工艺技术；以崇义义安桥为工程实例，把低预应力混凝土与全预应力混凝土、钢筋混凝土在20m 跨径、一定荷载的作用下作了全方位的对比。

Analysing the influences of inherent stress to service behavior of the short concrete filled steel tube, get the series curves of short compression column with inherent stress.

钢管混凝土是将混凝土填入薄壁钢管内而形成的组合材料，是介于钢和钢筋混凝土之间的一种新型结构。

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。