Instead, many deaths and injuries in earthquakes result from falling objects and the collapse of buildings, Bridges, and other structures.
反而，许多死亡和伤害在地震起因于下落的对象和大厦、桥梁，和其它结构的崩溃。
Perhaps the idea of “bigger is better” and “you can't take it with you” are now becoming outdated and outmoded ideologies—especially with the near collapse of worldwide financial structures.
也许，“越大就越好”和“今朝有酒今朝醉”之类的想法已经日渐过时——尤其是在全球金融结构近乎瓦解的情况下。
Perhaps the idea of "bigger is better" and "you can't take it with you" are now becoming outdated and outmoded ideologies-especially with the near collapse of worldwide financial structures.
也许，“越大就越好”和“今朝有酒今朝醉”之类的想法已经日渐过时——尤其是在全球金融结构近乎瓦解的情况下。
Based on the double control damage criterion and index of the linear function of the maximum deformation and cumulative hysteretic energy, the collapse of the SDOF structures is analysed.
基于最大变形和累积耗能线性组合的双重破坏准则及破坏指标，对单自由度结构进行了倒塌分析。
The analysis results show that the progressive collapse resisting capacity of steel structures can be remarkably improved by increasing the failure strain of the structural material.
分析结果表明：对于钢结构，提高材料的失效应变，可以显著提高结构抵抗连续倒塌的能力。
In this paper, the influence of post-ultimate negative stiffness stage on earthquake collapse response of reinforced concrete frame structures to a severe earthquake is studied.
本文研究了极限后负刚度段对钢筋混凝土框架结构地震倒塌反应的影响。
Many buildings in Amatrice and elsewhere are still in danger of collapse, and weeks after the quake, aftershocks continued to strain already-weakened structures.
阿马特里切和其他地方的不少建筑仍有倒塌的风险。尽管离地震发生已经过去了数周，但余震仍威胁着本就遭到削弱的建筑结构。
Abstract :The key issue of progressive collapse (PC) design method is to determine the PC resistance demand of the structures with members removed due to accidental action.
摘要 ：结构抗连续倒塌设计方法的关键是确定因偶然作用导致局部构件失效后剩余结构的连续倒塌抗力需求。
Therefore, it has importantly theoretical and practical value to study dynamic stability and establish anti-collapse design advice of steel frame structures.
因此，对框架动力稳定性的研究并建立“防倒塌”抗震设计建议具有较重要的理论价值和工程实用价值。
The research results can serve as a theoretical basis for further calculation analysis and quantitative design on seismic collapse resistance of reinforced concrete structures.
研究成果为钢筋混凝土结构抗地震倒塌的定量设计及计算分析提供了理论依据。
Two real buildings are analyzed to study the failure mechanism of the structures. The models proposed are helpful to study the collapse mechanism of high-rise seismic buildings.
采用建议的数值模型对两个实际结构进行了分析，分析结果对研究结构在地震下的破坏倒塌机理具有参考意义。
Development of large collapse structures in karstic terrain requires an interaction between mechanical instability and chemical removal of collapsed rock.
机械的不稳定性和崩塌块石的溶蚀搬运以及二者之间的相互作用是喀斯特区大型塌陷构造的发育条件。
Attention should be paid to the design for prevention of progressive collapse caused by local failure due to abnormal loading in all types of structures.
在设计任何结构中，均需考虑防止由意外荷载引起的连续倒坍问题。
Currently, the progressive collapse of building structures due to accidents has become a serious threat to the public safety.
建筑结构在意外事件时的连续倒塌已成为严重威胁公共安全的重要问题。
Abstract: the progressive collapse of the building structures due to accidents has become a hot research topic of civil engineering all around the world.
摘要：建筑结构在意外事件情况时的连续倒塌问题已成为国内外土木工程学科的研究热点。
Lastly, there are various types of earthquakes caused by man-made activities, for example, explosions or the collapse of large structures.
最后，有很多种地震是由人类活动造成的。比如，爆炸和大型建筑物倒塌。
In this paper, a discrete element model for collapse simulation of frame structures is developed. The failure criterion and determination of analytical parameters such as damping are also studied.
本文建立了适合框架结构倒塌分析的离散单元模型，并且研究了模型的破坏准则、阻尼等参数确定方法。
The earthquake collapse mechanism of structures is discussed, and an earthquake damage model is proposed, in which the degradation stiffness ratio is used as a damage parameter.
从理论上探讨了结构地震倒塌模式，提出了以退化刚度比作为破坏参数的地震破坏模型。
D seismic prospecting is more and mo re extensively used in many aspectss uch as small faults , small structures and collapse column in mining areas of coal mine.
三维地震勘探在解决诸如小断层、小构造、煤矿采区陷落柱等方面的应用日益广泛。
The key issue of progressive collapse (PC) design method is to determine the PC resistance demand of the structures with members removed due to accidental action.
结构抗连续倒塌设计方法的关键是确定因偶然作用导致局部构件失效后剩余结构的连续倒塌抗力需求。
Abstract: High efficient numerical models that can simulate the behaviors of entire structural system are very important to the study on fire-induced progressive collapse of RC frame structures.
摘要：为了模拟火灾下结构倒塌破坏行为，需要开发能够反映结构火灾整体行为的高效数值模型。
Instead, many deaths_and_injuries in earthquakes result from falling objects_and_the collapse of buildings, Bridges, _and_other structures.
反而，许多死亡和伤害在地震起因于下落的对象和大厦、桥梁，和其它结构的崩溃。
Because of the natural environment and artificial factors, the bridge performance in service can gradually deteriorate, damage and collapse, which will greatly affect the safety of the structures.
桥梁结构在使用过程中由于受到自然环境和人为因素的影响，逐渐发生老化、损伤甚至坍塌破坏，这些病害对桥梁结构的运营安全构成极大威胁。
This paper investigates one of the failure modes of suspension membrane structures-plastic tensile collapse of the membrane.
本文对悬膜空间结构的一种破坏模式——膜的塑性拉伸失稳破坏进行探讨。
The horizontal stiffness of steel frame is relatively weak, and structures will collapse under seismic or wind loads.
钢框架结构水平刚度相对比较弱，在地震或风荷载的作用下结构将出现破坏。
In different load cases, damages of structures or members of concrete were born and incremental, which was an essence of collapse of structures.
混凝土材料或结构构件在不同工况下的损伤发育和累积问题是结构失效的本质问题。
In different load cases, damages of structures or members of concrete were born and incremental, which was an essence of collapse of structures.
混凝土材料或结构构件在不同工况下的损伤发育和累积问题是结构失效的本质问题。
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