The construction of the bridge began in oct 1999 , and the closing up of the steel tube was in dec 2000 . during that period , i learned and analyzed the current construction methods fairly comprehensively , and collected the construction technique data of the cfst arch bridges having been built . based on this , aided by the simulation of construction procedure using finite element program , i proposed the operation program to make the steel tube segment be located at one time , and the scheme of dividing rooms to segment pouring 大桥于99年10月开工， 2000年12月主桥钢管合龙，在此期间，本人就目前钢管混凝土拱桥的施工方法进行了较全面的了解和分析，搜集了此类已建桥梁的施工技术资料，在此基础上，又借助有限元程序对施工过程模拟计算的支持，提出了在梅溪河大桥悬臂安装过程中，钢管节段一次就位的操作程序和钢管混凝土分仓灌筑的方案，并为施工单位采纳应用。
Considering to the continuous rigid - frame bridge construction characteristic , putting forward the idea of reverse to optimize prestressed steel . according to different construction phases , the paper gets the formual of the cantalever phase , join two section of a bridge phase and the vertical prestressed steel , and works out corresponding program 考虑大跨径预应力混凝土连续(刚构)桥施工的特点，提出了基于倒装方法的预应力静定束、合龙束以及竖向束的优化设计理论，并编制了相应的计算程序。
With reference to the cantilever erection of the continuous steel box girder of zhuanxing road overhead bridge crossing shenfengjin expressway in shanghai , this paper mainly describes the application of plc - controlled hydraulic sync jack - up system to the balanced cantilever erection of the box girder , closure construction of the girder at midspan , and the operation , control key points and corresponding technical requirements for application of the system 摘要结合上海莘奉金高速公路颛兴路跨线连续钢箱梁悬臂架设施工，重点阐述了plc控制液压同步顶升系统在钢箱梁“对称悬拼，跨中合龙”中的应用及操作控制要点、技术要求。
Abstract : the construction control process of chongqing huang - hua - yuan jia lin river bridge is taken as an example in this paper . the control principle and method which used in construction control is stated . the controled object and control variable are defined and objective function is established by stochastic optimal control theory of engineering cybernetics for the error an alysis . so the whole construction control is achieved by computer as a measure of joining the two section of a bridge sucessfully 文摘:以重庆黄花园嘉陵江大桥施工控制的具体实践为例，介绍了该桥施工控制过程中所采用的控制原理和方法.对于误差分析，定义受控对象和控制变量，确定目标函数，采用了控制论中的随机最优控制理论，实现了计算机对施工的全过程控制，使大桥的下游幅顺利合龙
The curve of arch rib , rib section bending , splice of rib sections , seperator of tube , bracing plates , bracing system , meeting of arch , concrete pumping , hangers , tie - rods , the tower of the cable crane and the guy ropes , technical specifications of cfst arch bridge are discussed 对钢管混凝土拱桥的拱轴线选用、钢管节段弯制、节段拼接、管内分隔仓、缀板设计、联结系系统、合龙设计及其细节、管内混凝土的泵送、吊杆、系杆、缆索吊机与扣索塔架、技术规范等12个问题进行了探讨。
Seawall and sluice are the parts constructed in advance , while final closure is the last part in construction . the hydraulic condition during the final closure process is worse than that during any other processes . and with the compressing of the entrance , the hydraulic condition becomes badly , the drop height of entrance can reach 2 to 3 meter , the maximum velocity of flow even reaches 6 to 8 meter per second and flow condition also becomes complex 海堤和水闸的修建都是围海工程先期施工的部分，堵口则是海堤修筑的最后阶段，堵口合龙成败关系到围海工程成败，由于此阶段所遇到的水力条件十分恶劣，口门落差可达2 3m ，流速最大可达到6 8m / s ，且水流极其复杂，根据我国《围海工程技术规范》规定围海堵口必须进行龙口水力计算。
In addition , there are many qinghai ' s unique dishes of plateau style , such as fengwo liji ( tenderloin ) , danbai chongcao ji ( albumen caterpillar fungus chicken ) , yuanyang furong facai ( mandarin lotus long thread moss ) , shu helong , qingtang yangdu , rensen yangjing , songshu liyu ( carp ) , jinyu facai ( long thread moss ) , juhua liyu ( carp ) , facai zhengdan ( egg potage ) , yangrou shao qietiao ( mutton stewed with aubergine ) , kao yangrou ( toasted mutton ) , fazi routuan , huangmeng yanggaorou ( stewed lamb ) and so on 此外，还有蜂窝里脊、蛋白虫草鸡、鸳鸯芙蓉发菜、酥合龙、清汤羊肚、人参羊筋、松鼠鲤鱼、金鱼发菜、菊花鲤鱼、发菜蒸蛋、羊肉蘑菇片、羊肉烧茄条、烤羊肉、筏子肉团、黄焖羊羔肉等青海特有的高原风味佳肴。
