The characteristic, difference and relation of the normal and inverse design are compared detailedly. The formula of the first and second class eigen sensitivity are given. For the horizotal vibration system of building structure, the sensitivity method and perturbation method are adopted to modify the dynamic characteristics. The inverse eigenvalue problem of Jacobi matrix and the positive, symmetry, band matrix are studied. The method of Evolutionany Computation is first used in the inverse design of building structure, the principal problems are studied. The features of aseismatic inverse design of building are analysed.

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This paper expounds the importance of seismic design of building structure , and introduces the targets of seismic fortification and the contents of seismic design.

闡述了建筑結(jié)構(gòu)抗震設計的重要性国产乱来视频，介紹了抗震設防的目標和抗震設計的內(nèi)容。

The seismic qualification for a diesel-generator assembly was performed in analytical way and a finite element model of the diesel-generator assembly including the diesel engine, generator, gear increaser and common under-frame was built. The strength of each component was checked in accordance with the corresponding 1andards and codes and the structure integrity of die diesel-generator assembly under seismic loads was evaluated.

本文采用分析方法對抗震Ⅰ類設備柴油發(fā)電機組進行抗震鑒定免费欧美午夜性爱视频，對包括柴油機伊人久久99女女精品视频欧美一区二区、發(fā)電機、齒輪箱和公共底架在內(nèi)的柴油發(fā)電機組建立有限元模型進行抗震分析a片操屄视频，并根據(jù)相關規(guī)范和標準對柴油發(fā)電機組各部件進行應力評定和強度校核一级性爱不卡免费在线观看，對柴油發(fā)電機組在地震載荷下的結(jié)構(gòu)完整性作出評定。

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.

建議套建增層預應力鋼骨混凝土框架結(jié)構(gòu)設計時對于8度抗震設防區(qū)建造在II亚洲欧美综合在线天堂、III類場地土上的底層結(jié)構(gòu)層高為8.1m免费一级无码婬片AA片AV黄，增層層數(shù)為2層到4層的原二級抗震框架其柱端彎矩增大系數(shù)及相應的梁、柱大黄色视频试看60秒毛片、節(jié)點的抗震構(gòu)造措施應按一級抗震框架取用午夜人人操。

How to ensure this new structure to be in elastic state under frequent earthqu ake, be mendable under design earthquake and not collapse under infrequent earthquake, especially the last item, is the problem to be solved imminently in engineering field. Center around this problem, 5 aspects of investigation are carried out as following:(1) The experiment of seismic performance of ASCCs in this new frame structure has not been reported, in order to study this problem, 9 ASCC specimens with shear steel plate are tested subjected to the horizontal low cyclic loading, in which, the shear span ratio is 3 and axial compression ratio is different. The hysteretic curves of 9 specimens are obtained. The seismic performance indexes such as energy dissipation, stiffness degradation, strength degradation, skeleton curves and ductility of this kind of column are acquired, and the seismic fortification measures including ultimate values of axial compression ratio under different seismic degree are suggested.

1新型框架結(jié)構(gòu)中所采用的角鋼混凝土柱抗震性能的試驗研究尚未見報道，針對這一問題丰满熟妇口爆吞精，本文進行了9根剪跨比為3谁有免费的黄色视频、不同軸壓比、采用鋼板箍的角鋼混凝土柱在水平低周反復荷載作用下的試驗研究www.久久思思热.com，獲得了9根試驗柱的滯回曲線国产一级在线观看免费视频，考察了該類柱的耗能、剛度退化、抗力衰減95视频网址、骨架曲線及延性等抗震性能指標黄色午夜欧美视频，建議了角鋼混凝土柱在不同抗震等級下的軸壓比限值等抗震構(gòu)造措施。

According to the safety problems in earthquake for the modern urban areas, some main problems are analysed and the safety precontrol countermeasures of the modern urban lifeline system are put forward in this paper, in order to improve the capacity of disaster-resistance in mordern city.

摘要根據(jù)現(xiàn)代城市抗震防災要求免费看的黄色网站入口，分析現(xiàn)代城市抗震防災需要研究解決的主要問題婷婷国产精品视频综合，提出現(xiàn)代城市生命線系統(tǒng)抗震減災對策及具體的安全預控措施，從而提高城市的抗震防災能力免费三级视频黄色。

According to the safety problems in earthquake for the modern urban areas, some main problems are analysed and the safety precontrol countermeasures of the modern urban li feline system are put forward in this paper, in order to improve the capacity of dis

摘要根據(jù)現(xiàn)代城市抗震防災要求色爱爱亚洲视频综合，分析現(xiàn)代城市抗震防災需要研究解決的主要問題，提出現(xiàn)代城市生命線系統(tǒng)抗震減災對策及具體的安全預控措施www.人人操人人操麻豆，從而提高城市的抗震防災能力国产一级午夜福利。

As an example, the deposited oil Offshore Platform BZ28-1 of BohaiOil Field in China was numerated with genetic algorithms. The results show that the proposed method is significative in the design of the platforms.5. Theory and method of optimum design of earthquake-resistant structures based on optimal fortification intensity were introduced. Optimum design was performed for Platform BZ28-1 of Bohai Oil Field in China according to principle of three-level fortification and aseismic design method of two-stage of code for aseismic design of buildings.

介紹了基于最優(yōu)設防烈度的抗震結(jié)構(gòu)優(yōu)化設計的理論和方法，并以渤海油田BZ28-1儲油平臺為例人人操人人干av，在目標函數(shù)中既考慮了結(jié)構(gòu)的造價又考慮了損失期望看50岁黄色视频免费，根據(jù)&小震不壞、中震可修免费高清无码视频、大震不倒&三個水準的抗震設防原則XX欧美性爱，利用抗震規(guī)范的&二階段&抗震設計方法，對其進行了結(jié)構(gòu)優(yōu)化設計黄色视频无码在线，得到了考慮造價和損失期望欧美黃色网络、基于最優(yōu)設防烈度的最優(yōu)設計方案。

A brief discussion on seismic design of high arch dams is made through the following three aspects:interaction of arch dams-foundation-reservoir water,dynamic stability of high arch dam abutment ,effect of transverse slots on seismic design of high arch dam,and those aspects referred to above is not enough for seismic design of high arch dam.

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The main research contents are as follows:1. Through massive calculation, analysis and comparison, sum up the similarities and differences between the special-shaped cross sections and rectangular cross sections in mechanical features, between reinforced concrete special-shaped columns and rectangular columns in load-bearing capacity, ductility performance and provide necessary basic concepts and data for further understanding the characteristics of the special-shaped columns;2. Through massive elastic calculations and elasto-plastic analysis, under the preconditions of satisfying the code's requirements for axial compression ratio, limit value of lateral displacement and load-bearing capacity of normal section,oblique section and beam-column joint, under circumstances of different intensity of earthquake, structure dead weight, sort of site and column grid bay dimension, the variation regularity of maximum suitable height of structure, and thus sum up the maximum suitable height of structure for code for the purpose of macro-control while deciding the design scheme;3. Make a preliminary study on the stress feature of reinforced concrete special-shaped column and Z-shaped column of which the ratio of limb length to limb thickness is between 4~5 ,and the preliminary design method is suggested;4. Through elato-plastic time history dynamic analysis of typical projects, check up the weak storey of the special-shaped column structure and yielding, breaking and collapse mechanism to satisfy the earthquake resistant requirement to buildings of remaining stand under strong earthquake;5. Derive for project use simplified calculation formula of vibration period, suitable vibration period, suitable rigidity of special-shaped column structure through theoretical analysis, and provide an easy and practical method for deciding the structure scheme economically, safely and reasonably;6. Based on the study achievements in theory and massive analysis and calculations of this paper, sum up the regularities of inner force, deformation of special-shaped column structure and seismic conceptual design, and thus the suggection of seismic design of special-shaped column structures is presented.

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