So , we can draw some conclusions as follows : the method of upgrading the seismic - measures which is adopted by gb50223 - 95 is effective and is more effective than the method of upgrading the earthquake - design - level for those category frames of which seismic - measures are needed to be upgraded from grade 2 to grade 1 . but for those category frames of which seismic - measures are not upgraded from grade 2 to grade 1 ( e . g . those frame of which seismic - measures are needed to be upgraded from grade 3 to grade 2 or from grade 4 to grade 3 ) , whether the method of upgrading seismic - measure is more effective than the method of upgrading earthquake - design - level needs further research 因而可以有如下结论， gb50223 - 95对乙类建筑所采用的提高抗震措施等级的设计思路是有效的，并且，对于抗震措施需从二级提高到一级的乙类建筑，该方法比提高设计地震力的方法更为有效；但对于抗震措施不是从二级提高到一级（如从三级提高到二级、或从四级提高到三级）的乙类建筑，提高抗震措施等级的方法是否一定比提高设计地震力的方法更有效尚需作进一步探讨。
Research has been done on the calculating methods of lateral stiffness and bearing capacity of the frame . according to experimental studies , finite element analysis and theoretical analysis , it develops to calculate lateral stiffness of frame with special - shaped columns of greater height - width ratio by using frame with rigid zones , and considering shear deformation of beam and columns . without considering the torsion of the whole structure , assuming the special - shaped column in the rc frame is flexural failure under uniaxial eccentricity force , putting forward the calculation method of flexural strength of special - shaped columns and the shear strength in a story for r . c 对异形柱框架分别按普通框架和壁式框架进行分析，并与空间有限元分析结果和试验结果进行比较，提出了异形柱框架结构侧向刚度的计算方法；在整体结构不产生扭转且异形柱为弯曲破坏的假定下，提出了异形柱的受弯承载力及受剪承载力计算公式；提出了根据异形柱框架结构的破坏机构确定其楼层受剪承载力的方法。
This paper expands on the dynamic property of take - up in theory from the perspect of the whole system . in the meantime , it mainly studies dynamic analysis of take - up by finite element methord . by the optimization of the pull force in take - up , the whole system property is improved . and the system can work safly and reliably in various conditions 本文从系统整体出发，对拉紧装置动特性在理论上作了详细论述，而且运用有限元方法对其进行了动态特性分析，通过优化拉紧装置拉紧力的方法来优化系统的整体动特性，从而使运输机在非稳定运行工况下安全、平稳、可靠的运行。
Method to evaluate pile capacity precisely by using the coefficient of cleaning slime and coefficient of construction process and by controlling the total duration of construction is proposed herein after analyzing the influences of slime at pile bottom , thickness of mudcake by the side of pile , shape of hole wall , time of construction and construction process on the bearing capacity of large diameter cast - in - place pile 本文通过分析桩底沉渣、桩侧泥皮厚度、孔壁形状、成桩时间及施工工艺等对大口径灌注桩承载力的影响，提出了在桩承载力计算中引入清底系数及成桩工艺系数，并控制成桩总时间以较准确地评价单桩承载力的方法。
This research contains the tourism destination market structure , ecologic environment carry capacity of tourism area , long time series water resource and tourists amount , discussing several questions as bellowing : ( 1 ) seeking another tourism destination for instead to decrease the tourism pressure in over loaded destination ( 2 ) calculate environment quality level to optimize tourism planning distribution ( 3 ) estimate the varies trends of tourism destination water resource carry capacity and tourists amount in recent 10 years and give a forecast this research include the principal part of tourism , which is the tourists and tourists amount , mentioned in tourism surrounding carry capacity ; include the sustain part of tourism , which is the nature environment , mentioned in sewage acceptance ability . both the tourism market and tourism planning are considered to enhance environment carry capacity , and dynamic varies in water resources and tourist amount are researched though the long time series seasonal adjusting 本论文主要从旅游目的地市场组成、旅游地自然生态环境承载力、长时间序列的旅游地水资源和游客量入手,分析讨论以下几个问题: ( 1 )通过寻找替代旅游目的地的方法,减小超载旅游目的地旅游环境压力( 2 )计算环境质量水平,优化旅游规划分区( 3 )评估与预测旅游地水资源承载力及多年游客量的变化规律论文研究切入点既包括作为旅游主体? ?游客与游客量,涉及游览环境承载力方面,又从旅游发展的载体? ?自然环境入手,涉及自然环境纳污力方面;从旅游市场和旅游规划两方面考虑提高环境承载力的方法;并通过季节调整反映长时间序列水环境和游客量的变化规律,对旅游环境承载力的动态变化给予研究。
At the same time , it gave frequency domain and time domain solutions of system equations about two motions on pure rolling and rolling coupled swaying of the ship . based on analyzing the control principle of the anti - rolling tank , the optimal control of controlled passive tank is devised according to the principle of optimal control , and the implementation approach presented . the author also studies the controller design of the activated tank , presents the technique of enumerating tank active force , and simulates the three kinds of tank system 在分析减摇水舱控制机理的基础上，根据最优控制原理，提出了可控被动式减摇水舱的最佳控制，给出了最佳控制的实现方法；研究了主动式减摇水舱控制器的设计及确定水舱主动力的方法；对被动式、可控被动式和主动式减摇水舱系统进行了仿真分析。
Then , mechanical responses of pavement structures were analyzed with elasticity theory , based on actually applied pattern of heavy loading , analysis method of ultimate bearing capacity of pavement structures was proposed , and the factors affecting ultimate bearing capacity were analyzed also , which provided a theoretical basis for the restriction of alex load 其次,根据实测荷载作用面积和计算轮胎接地压力,计算了重荷载作用下水泥混凝土路面结构的力学响应,提出了分析混凝土路面极限承载力的方法,并分析了极限承载力的影响因素,为限载提供了理论依据。
National standard ? 《 standard for classification of seismic protection of buildings 》 ( gb50223 - 95 ) adopts the method of upgrading the seismic - measures to upgrade category structure ' s earthquake - resistance level . it is different from some foreign codes ( such as us 、 new zealand ) which adopt the method of upgrading the earthquake - design - level . the main topic of this dissertation is to study which method is more effective 国家标准《建筑抗震设防分类标准》 （ gb50223 - 95 ）中对乙类建筑采用的是通过提高抗震措施等级来提高其设防水准的方法，这与国外（如美国、新西兰、欧共体等）对重要建筑所采用的提高设计地震力的方法有概念上的差异。
Consequently , to optimize the appearance and structure design of retaining walls , especially to have a deeper understanding of the bearing mechanism of various retaining walls and select city retaining wall type reasonably are of great engineering significances and potential economic effect . based on a thorough analysis of the character and mechanism of city - retaining - wall structures , the design theories , construction technology , new wall types and development tendency are deeply discussed . besides , the characteristics of various types of city retaining wall are discussed , and the usual methods for earth pressure calculation are summarized 本文在综合分析目前常用城市挡土结构的特点及其受力特性等基础上，针对一般挡土墙设计理论、施工技术、新型结构以及未来的发展趋势进行了深入探讨，论述了城市挡土结构的特点，并对常用土压力理论进行了综述，介绍了城市挡土墙常见的类型，并介绍了常规的设计理论和方法；通过分析比较，优选出锚杆挡土结构和砌块式挡土结构，并从锚杆锚固原理出发，结合工程实践和大量现场试验、对锚杆的抗拔承载力进行了深入研究，提出了用调整双曲线模型法计算锚杆抗拔承载力的方法，对土压力计算方法进行了探讨，对其设计计算方法进行了研究。
Against the status of large scale ultra low frequency air spring vibration isolation platform , which is low damping and poor performance of low frequency , and after analyzing the existing key damping system , a new type differential electromagnetic damping system ( emds ) is developed in this article in order to reduce the resonance peak of the platform effectively and improve the low frequency performance of the platform 本文针对大型超低频空气弹簧隔振平台阻尼小、低频隔振性能较差的现状,在比较多种提供阻尼力的方法后,提出了用电磁力作为隔振平台的阻尼力,并开发研制了差动式电磁阻尼器系统。该系统可以有效降低隔振平台的谐振峰值,从而达到了提高隔振平台低频性能的目的。
