结构破坏

Analysis of the test results indicates:having been prestressed,the walling with ring beam and tie column not only can increase own anti cracking degree and load bearing ability to some great extent,but also improve evidently own behavior of deformation,ductility and energy consumption.

从我国的国情出发，今后砌体结构仍将是一种应用相当广泛的结构形式。但历次地震的震害表明，这类房屋的抗剪能力和抗变形能力较差，其破坏严重。鉴于此，国内外许多单位通过研究与实践，提出了一些有关改善砌体结构抗震性能的措施[1～ 3] 。

But the titanic acid nanotubes were thermally unstable.

发现钛酸纳米管在高温时向锐钛矿结构转变，相转变的机制是由于纳米管在热力学条件下层间和层内进行脱水，正交结构遭到破坏后结构进行重新排列而导致的。

The analysis results of FTIR , SEM, X-ray Diffraction and TG-DSC proved that,the existence of graft copolymerization between cassava starch and acrylamide was occured;the structures of cassava were destroyed during the copolymerizing; the structures of the copolymer were largely amorphous; within the range of 700℃,the thermal degradation process of the St-g-PAM was divided into three-steps, which was more complex than that of cassava.

FTIR、SEM、X射线衍射、TG-DSC分析结果表明木薯淀粉与丙烯酰胺已发生接枝共聚反应；木薯淀粉在接枝共聚反应中，结构被破坏，接枝共聚物的结构基本上为无定型结构；在700℃温度范围内，木薯淀粉丙烯酰胺接枝共聚物的热降解为三步降解历程，比木薯淀粉复杂。

Finally, a practical seismic analysis method is presented. Through a reasonable assumed distribution of lateral forces, the capacity curve can be derived from the story shear-displacement curves. And by using equations suggested by ATC-40, the corresponding capacity spectrum, period, damping ratio and PGA can also be obtained. This method can provide not only collapse PGA of a low-rise RC building structure, but also damage conditions of members at a specific PGA. Combining with the deterioration rule for RC column after multiple earthquakes, it can also be applied to seismic analysis for after-earthquake or aged buildings.

最后则提出一套适用於中低层RC建筑结构之实用耐震诊断法，依照合理假设之地震力竖向分配型态及ATC-40建议公式，可再将层剪力-层间变位曲线换算为基底剪力-屋顶位移能力曲线，并计算对应之等效周期、阻尼比与PGA，除可评估结构整体之崩塌地表加速度外，也可由特定PGA反推对应的构件破坏程度，亦可配合震后折损修正，应用於结构之震后与经年耐震评估。

The mechanical behaviour of the bridge with and without middle diaphragm s in the loading-failure process is investigated in great detail.

以虚拟层合单元程序为基础，综合考虑结构的几何非线性和材料非线性，对一典型5跨简支连续小箱梁桥结构的极限承载力进行了分析，重点考察了在有、无跨中横隔梁时，结构从加载到破坏的全过程中受力性能的变化。

This paper aims at putting forward a "wind vibration damping control technique"to reduce the dosage of the steel,holding back the demolishments of steel tube towers and communication towers due to wind-induced vibration,and subsequently the execrable aftermaths of discontinuity in circuits and communications.

本课题旨在通过简单易行的&风振阻尼减振技术&来降低结构用钢量，减少高耸塔桅结构的体积，遏止风振带来对输电线路钢管塔、微波通讯塔等高耸结构钢管塔的破坏，以及引起的电路、通讯中断等恶劣后果。

Through the test of lightweight infilled material in multi-ribbed wall structure,a axial compression constitutive model of lightweight infilled material at the(6±2)% water content is proposed.

通过对密肋复合墙体结构常用的轻质填充材料在含水率为(6±2)%时的单轴受压试验，确定了密肋复合墙体结构的轻质填充材料单轴受压本构模型，进而基于统一强度理论，结合抗拉强度及抗剪强度试验，确定了密肋复合墙体结构填充材料的多轴破坏准则，并建立了密肋复合墙体填充材料的弹塑性本构模型。

Chapter 2: Analysis the reasons and character of fatigue damage in long-span bridge.

第二章从理论上探讨结构疲劳破坏的原因，结构承受循环应力是影响结构抗疲劳能力的主要因素。

If a publisher rejects a novel, it is either because the story is unsaleable or the author is unknown.15. Our new car not only is more user-friendly, but also it is more comfortable than our old one.14. If a publisher rejects a novel, it is either because the story is unsaleable or because the author is unknown.15. Our new car is not only more user-friendly but also more comfortable than our old one.

了解错误平行结构产生的原因：平行结构是把两个或两个以上意思并列的成分用同等语法形式表达，如果意思上并列的成分用不同等的语法形式来表达，就破坏了其平行结构。

In order to study the deformation destructive pattern and influence rule of box tunnel lining structure cross the ground fissure with 30 degree, based on the background of Xi'an metro engineering and the geological environment of Xi'an ground fissure, the similar constant of box tunnel lining structure modelling experiment was designed according to the similar theory, furthermore, the parameters of model concrete, model reinforcement bar and model structure country soil were designed.

为了研究小角度（30°）斜穿地裂缝的箱型隧道衬砌结构在地裂缝影响下的变形破坏模式和影响规律，从西安地铁工程背景和西安地裂缝地质环境出发，根据相似理论设计了箱型隧道衬砌结构模型试验的相似常数，在此基础上对模型混凝土、模型钢筋、结构围岩参数等进行了设计。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。