It also has important reference value for the similar construction . by the safety and seismic evaluation of this aqueduct bridge , it has shown that ( 1 ) besides the structure of this aqueduct bridge was basically unharmed without some flake of concrete cover and revealing stirrup , its intensity basically reached the need of primary design . ( 2 ) from the side of carrying capacity , rib arch could satisfy the needs under the action of wind and earthquake , but some individual frame crossbeams and most rib arch tie beams could n ' t satisfy the need 通过对东滑峪渡槽进行安全性能和抗震性能评估后表明： ( 1 )渡槽除肋拱顶面有保护层剥落、箍筋外露，结构基本完好，其强度基本达到西安理工大学工程硕士专业学位论文原设计的强度要求； （ 2 ）从承载力方面看，在风荷载、地震作用下，肋拱基本满足要求，个别排架横梁不满足要求，肋拱连系梁普遍不满足要求；计入水平横槽向地震作用的工况为设计控制工况。
Then the coupling beams with new reinforcement layout were made an inquiry into , and the improvement on the seismic behavior by coupling beams diagonally reinforced with a few rows in end regions was found out at last , based on the observations of the experimental phenomena and the analysis of the measurement result , and by the comparison of seismic behavior by making use of hysteretic response , ductility and energy dissipation behavior , a conclusion is presented : the code for design and construction of reinforced concrete high - rise structures ( the draft asked for advise hi 2000 ) ca n ' t ensure that the coupling beams have fairly good seismic ductility ; the result of improvement of the seismic ductility of the coupling beams by the increase hi stirrups besides the strengthen of longitudinal detailing reinforcement was n ' t obvious ; the coupling beams diagonally reinforced with a few rows in end regions have fairly good mechanisms , and the ductility and the behavior of energy dissipation are better than conventionally reinforced concrete coupling beams , so it is suitable to te tised in short coupling beams 本文通过对三根小跨高比(均为l h = 1 . 0 )剪力墙洞口连系梁在低周反复荷载作用下的试验，了解了严格按《钢筋混凝土高层建筑结构设计与施工规程》 ( 2000年征求意见稿)设计的连梁具有的抗震性能，研究了采取增大连梁配箍量同时加强纵向构造筋的方案对抗震性能的影响，并进一步对新的配筋形式的连梁进行了探讨，了解了在连梁梁端配置多排交叉斜筋方案对连梁抗震性能的改善。通过对试验现象的观察和量测结果的分析，利用荷载?位移滞回曲线、延性和耗能性能等指标对各个试件的抗震性能进行了比较，最后得出结论： 《钢筋混凝土高层建筑结构设计与施工规程》 ( 2000年征求意见稿)不能保证小跨高比连梁具有较好的抗震延性：通过增大连梁配箍量同时加强纵向构造筋的方案对改善连梁的抗震延性的效果不太明显；梁端配置多排交叉斜筋的连梁具有相对较好的受力性能，其延性和耗能性能等各项性能指标均优于普通配筋连梁，宜在深连梁中采用。
According to the result of the internal force calculation , this paper introduces detailedly the design of tied frame prestress reinforcement , the checking calculation of section stress and intensity of arch and tied frame , also it provides some result files > arrangement drawings and main structure design drawings 利用内力计算结果，本文还详细介绍了系梁预应力配筋设计，拱肋和系梁截面应力和强度验算及横梁设计计算，并提供了部分计算结果文件、总体布置图和主要结构设计图纸。
Asthma is an inflammatory airway disease . professor leung ting fan of the department of paediatrics said that in the past , it is very difficult to assess the degree of airway inflammation directly . medical research has found that inflammation of the airways will increase the level of nitric oxide in the exhaled breath of the patients 新的量度气管发炎程度的方法亦加强了对哮喘的监察，儿科学系梁廷勋教授表示，哮喘是一种气管炎症，过去我们很难直接知道气管发炎的程度，不过医学研究显示，气管发炎会让患者呼出的一氧化氮增加。
The main components of the latter are multi - rib sandwich panels , including floor slabs and wall slabs . reinforced concrete conformation columns are set where the longitudinal walls and latitudinal walls intersect and copulative beams are set where floor slabs and wall slabs intersect . they play a role of linking and transferring loads , bearing a small part of loads at the same time 无骨架体系的主要承重构件是密肋夹芯板(包括楼板和墙板) ，纵、横墙相交处设钢筋混凝土构造(连接)柱，墙板和楼板相交处设连系(圈)梁，连系梁和柱主要起连接和传递荷载作用，也承担少部分荷载。
There are many lifting equipments with thousands of varieties and specifications , such as l series of electric single beam cranes and manual single beam cranes , q series of electric bridge - style cranes , m series of gate - style cranes , qt series of tower cranes , and h series of electric hoist cranes , which are widely used in the industries of metallurgy , machine , mine , railway , port , oil , chemical industry , construction and so on 集团的主要产品有l系列电动系梁起重机及手动单梁起重机， q系列电动桥式起重机， m系列门式起重机， qt系列塔式起重机， h系列电动葫芦及其它形式的起重机械共有千个品种规格，广泛应用于冶金、机械、矿山、铁路、港口、石油、化工建筑等行业。
Coupling beams between openings are the main plastic energy dissipation elements of coupled walls , but whether short coupling beams could ensure that shear failure would n ' t take place before coupling beams have reached certain displacement ductility or not , is still a problem of engineering which has n ' t been solved and is one of the critical problem of the code for design of concrete structures which remains to be solved 洞口连系梁是联肢剪力墙的主要塑性耗能构件，但跨高比较小的连梁是否能保证在达到一定的位移延性之前不出现剪切失效，仍是目前我国工程界未解决好的问题，也是我国《混凝土结构设计规范》遗留下来有待解决的关键问题之一。
The prestressed continuous beam - arch composite bridges are a special structural system where the horizontal thrust of the arch rib is absorbed by a prestressed tie at deck level . in some cases , this type of structure is preferable because it does n ' t have the large thrust at the spring hi traditional arch bridges and the somewhat large bending moment and shear force in traditional beam bridges . as a result , the performances of the prestressing reinforcement can be efficiently utilized 它利用拱肋承担压力，系梁预应力束抵抗拱端推力，吊杆及纵横桥面系结构承受桥面荷载，既克服了传统拱桥巨大的拱端推力，又改善了连续梁桥较大的弯矩和剪力的受力状况，最大限度地发挥了拱梁混凝土和预应力钢筋各自的特点，经济效益显著。
