. because of overinvestment and long construction period in tall building , design staff make great efforts to give an optimization design in order to achieve the best structural layout and practise economy all the time . but on account of hugeness of design variable , constraint condition and computational complexity , the achievement of structural optimization for high rise building in engineering had droped behind the progress of theory out and away in recent years 高层建筑投资大,建设周期长,对其进行优化设计以期获得最优结构方案并节约投资,一直是结构工程师所努力的。但是由于设计变量、约束条件、计算量过于庞大的原因,其成果还较少应用于工程实际,目前远远落后于理论进展。
As an effective traffic of light rail transit , it has been widely adopted by many large cities over the vorld , and a few cities of china are planning or building the light rail transit in our country , which has characteristic of saving investment , short construction period , high flexibility and low life - cycle costs for the light rail transit which can be constructed underground or high frame in crucial area , which can be suitable for the requirements of large capacity , high speed , safety and punctuality 轻轨交通便是其中一种有效的交通方式,近几年来在世界上各国大城市得到迅速发展,我国也有十几座城市计划或正在建设轻轨交通。其具有投资少、建设周期短、灵活性强、运行成本低的特点,可在关键地段和市中心区采用高架或地下铁道结构,使其能运量大、速度快、安全、准点。
建设: build; construct; reconstruc ...周期: period; cycle; circle; revol ...使建设周期缩到最短期限: keethe construction cycle to the minimum duration建设周刊: nirmal weekly建设项目周期:: project construction cycle建设补助金周期: capital grant cycle建设项目生命周期管理: blm建设: buildconstructreconstructiondevelopment周期: period; cycle; circle; revolution; round; complete alternation 产业周期 industrial cycle; 经济周期 economic cycle; 商业周期 business cycle; trade cycle; 生产周期 production cycle; 再生产周期 cycle of reproduction; 缩短恢复周期 shorten the period of convalescence; 固有周期 natural period; 延长支付周期 extend a payment period; 昆虫的生活周期 the life cycle of insects; 工作周期 action cycle; 周期变化 periodic change; periodic variation; 周期表 [化学] periodic table; periodic chart; 周期律 [化学] periodic law; law of periodicity 建设局 建设局: department of economic development陈建设: chen jianshe地建设: 63.the construction ofthe site度建设: overbuild构造;建设: construction建设,建造: build建设报: al bina; al insha; aufbau der; bina al; construction; daily ta'meer; der aufbau; insha al; nirman; stroitelnaya gazeta; tameer; xay dung建设的: constructive建设费: construction cost; cost of construction; costs of erection建设局: building and construction authority (bca)建设省: construction ministry; ministry of construction建设师: architect建设性: constructive 建设性的意见 constructive suggestion; 建设性改革 constructive policies; 建设性会谈 constructive talks; 建设性社会控制 constructive social control建设者: builder; constructer; constructor; erector; kensetsusha; ndertuesi; pembena; prabartak建设中: in construction井建设: well construction