抗震设防烈度 meaning in English
seismic fortification intensity
Examples
- Combining these formulas with some earthquake intensity and site - eigenperiod , the lateral seismic responses of free - head and fixed - head pile groups were calculated
结合具体的抗震设防烈度和场地特征周期，计算了成层地基中群桩的横向地震响应。 - Under the horizontal earthquake action and wind force , aim at " the pure frame structure with rectangle columns " , " the pure frame structure with special - shaped columns " , " the frame - truss structure with special - shaped columns " and " frame - shear wall structure with special - shaped columns " , earthquake action analysis was done by the spacial finite element method through the changes structural parameter . analyzing systematically " structure vibration mode " , " vibration period " , " structure lateral rigidity " , " seismic action force " , " seismic response force " , " floor seismic shear force " , " lateral horizontal displacement of structure " and " members internal force " . results indicate : ( 1 ) based on equal area , the special - shaped columns replaced the rectangle columns , the structural lateral rigidity enlarges , the lateral displacement minishes obviously , the earthquake response increase slightly , the biggest increasing amount of frame columns axis - compress ratio is smaller than 0 . 08 . the whole aseismic performance of structure has improved ; ( 2 ) when the section ' s length and section ' s thickness ratio of special - shaped columns is smaller than 3 . 6 , the structure benefits to resist seismic action ; ( 3 ) the angle of horizontal seismic action with the whole coordinate is 0 degree , structure earthquake response is bigger , belonging to a control factor of structure aseismic design ; ( 4 ) the frame - truss structure with special - shaped columns and the " a " - brace has the biggest lateral rigidity ; ( 5 ) the frame - shear wall structure with special - shaped columns have bigger lateral rigidity and smaller displacement , members internal force enlarged just rightly , have much superiority of resisting seismic action ; ( 6 ) in the higher seismic fortification criterion region ( 8 degree of seismic fortification intensity ) , aseismic disadvantageous building site ( iii type site ) , adopting special - shaped columns structure system , should reduce possibly the building ' s self - weight in order to reduce the earthquake response ; ( 7 ) the response spectrum method of computing seismic response and the time - history analysis method have similar analysis result
西安理工大学硕士学位论文在水平地震作用下，并考虑风荷载组合，分别对“矩形柱纯框架结构” 、 “异型柱纯框架结构” 、 “异型柱框一析架结构”及“异型柱框-剪结构”等四种结构体系，通过改变结构参数，运用空间有限元方法，进行地震作用计算。系统地分析研究“结构振型” 、 “振动周期” 、 “结构侧向刚度” 、 “结构地震反应力” 、 “楼层地震剪力” 、 “结构侧向位移” 、 “层间位移角” ，以及“构件内力” 。结果表明:在等面积原则下，异型柱代换矩形柱后，结构刚度增大，侧向位移明显减小，地震反应力略有增加，框架柱轴压比最大增幅小于8 % ，结构整体抗震性能有所提高;当异型柱肢长肢厚比小于等于3 . 6时，结构有利于抗震;水平地震作用力与整体坐标夹角为0度时，结构地震作用效应较大，属结构设计的控制因素之一;异型柱框一析架结构采用“人”字斜撑，侧向刚度大于“八”字斜撑和“人一八”字混合斜撑;异型柱框一剪结构侧向刚度大、位移小，构件内力增大适中，是一种抗震性能优越的结构体系:在抗震设防烈度较高地区( 8度)和抗震不利的建筑场地( m类场地) ，采用异型柱结构体系时，应尽可能减轻结构自重，降低地震作用力;分别采用“振型分解反应谱”法和“时程分析”法进行地震作用计算，两种方法所得结果基本一致。 - This paper related to a practical project that a high school is big bay building with teaching , experiment and studying , aim at the higher seismic fortification criterion region ( 8 degree of seismic fortification intensity ) , aseismic disadvantageous building site ( iii type site ) , and the building loading much ( the building " self - weight is over the 9 . 0 kn / m2 ) . compared to r . c . rectangle columns , studying the aseismic performance of the r . c . special - shaped columns pure frame structure , the r . c . special - shaped columns frame - truss structure and the r . c . special - shaped columns frame - shear wall structure
本文，结合某中学大开间教学实验综合楼的具体工程，就抗震设防烈度较高地区( 8度)和抗震不利的建筑场地(类场地) ，并且建筑物所受荷载较大的情况(建筑物自重超过9 . 0kn m ~ 2 ) ，通过与矩形柱分析比较的方式，研究了异型柱纯框架结构、异型柱框架-桁架结构，以及异型柱框架-剪力墙结构的抗震性能。 - Because of its many advantages , the tapered portal frame is getting more and more application . ( ( technology code of light steel structure of portal frame ) ) ( cecs 102 : 2002 ) , our country enacted , does n ' t define conditions that tapered portal frame needs anti - earthquak - e design . but mentions in illustration of rules : when earthquake fortification intensity is 7 degree , the portal frame does n ' t need anti - earthquake checking generally ; but for 8 degree and above , horizontal just with lengthways frames both need anti - earthquake checking
楔形变截面门式刚架山于其诸多的优点得到越来越广泛的应用，我国颁布的协会标准《门式刚架轻型房屋钢结构技术规程》 ( cecs102 2002 )中没有对变截面门式刚架需要进行抗震设计的情况进行具体规定，但在后面的条文说明中提到： “当抗震设防烈度为7度时，一般不需做抗震验算；当为8度及以上时，横向刚架和纵向框架均需做抗震验算。 ” - Some conclusions are drawn : 1 ) effect of inertial force from superstructures on the lateral seismic response of single pile can not be ignored ; 2 ) the lateral seismic response of single pile induced by far - field earthquake are mainly affected by acceleration mass of superstructure > site eigenperiod . it increases with the increment of accele ration and mass of superstructure . as the site characteristic frequency approaches the self - oscillation frequency of the pile , sympathetic vibration occurs and the value of lateral seismic response reaches maximum ; 3 ) as the stiffness ratio of pile to soil increase , the relative displacement of pile to soil increases ; 4 ) the lateral seismic response of fixed - head pile is much smaller than that of free - head pile
将其解析解与具体的的抗震设防烈度和场地特征周期结合起来，计算分析了成层地基中单桩的横向地震响应，得到了以下结论： 1 )上部结构惯性力对桩的横向地震响应的影响不可忽略； 2 )成层地基中的单桩的横向地震响应主要受地震基本加速度、场地特征周期、上部结构质量的影响，随地震基本加速度、上部结构质量的增大而增大；场地特征频率越接近桩基自振频率，桩基地震响应越大，等于自振频率时，由于发生共振现象，桩基响应幅值最大； 3 )桩土刚度比越大，桩土之间的相对位移的幅值越大； 4 )桩顶固接的连接方式，可以有效地降低地震时单桩的横向地震响应。