Combining with the project example , this paper made some studies on the foundation underpinning and structure stabilization technology , covering the theoretically discussion , and design innovation , and advanced technique ' s application and dissemination and the summary of construction experiences , etc . , in order to provide reference for similar project in the future 本文结合工程实例,拟就独立柱基础托换及结构加固技术进行理论上的探讨、设计方面的创新、先进技术的推广和应用、施工经验的总结等各方面的研究,为同类工程提供一些可借鉴的施工经验。
This paper has explained the concept , system , status of development of the external prestressing force structure and described the mechanics characteristic , durability of the external prestressing force structure , turned to a design , structure strengthening and application prospect in our country systematically 摘要阐述了体外预应力桥梁结构的概念与体系、发展状况;系统地论述了体外预应力桥梁结构的力学特征、耐久性、转向块设计、桥梁结构加固及其在我国的应用前景。
Methods on 236 cases of baggy deformities of lower eyelid , transconjunctival orbital fat removal , partial skin removal , orbicularis oculi musculoplasty , transcutaneous orbital fat removal and reinforcement of supporting structures of lower eyelids , or orbital fat preservation blepharoplasty were used according to patients individual conditions 方法对236例睑袋患者,根据具体情况采用结膜径路的眶脂去除术( 41例) 、单纯松弛皮肤去除术( 25例) 、单纯眼轮匝肌整复术( 8例) 、皮肤径路的眶脂去除下睑支持结构加固术( 149例)以及保留眶脂的睑袋整复术( 13例)进行整复。
Because traffic flow greatly increases in recent years and the rank of actual driving load enhances , causing this bridge to be at the excess load the service condition , so in order to guarantee the bridge ' s transport security , the main body structure of the bridge should be reinforced 摘要长沙市八一路跨线桥由于近年来交通流量大增,实际行车荷载等级提高,使得该桥处于超负荷的营运状态,为了保证大桥营运安全,需要对此桥的主体结构进行加固,在选择加固方案时对比了三种加固方法:钢混凝土组合结构加固方法、混凝土结构扩大截面加固方法、粘钢加固方法。
Carbon fiber reinforced polymer ( cfrp ) is a new type of material for civil engin - eering field , which is widely used to strengthen the rc members due to its advantages , such as high strength , light weight , corrosion free , fatigue resistance , convenience to construction and little influence to the physical apperence , etc 碳纤维复合材料( carbonfiberreinforcedplastics简称cfrp )是当前土木工程领域中的一种新型材料,具有高强、轻质、耐腐蚀和耐疲劳等诸多优点,更因施工简便、对结构外观影响小,而广泛应用于结构加固领域。
Based on the design code for strengthening concrete structure , using the theory of calculating the flexural capacity and the shear capacity of rc beams with rectangular section strengthened by frp , it is calculated and analysed the flexural capacity and the shear capacity of rc beams strengthened by bfrp sheets or cfrp sheets 摘要基于现行混凝土结构加固设计规范关于粘贴纤维增强复合材料加固法的计算理论,分别对玄武岩纤维布和碳纤维布加固钢筋混凝土梁的正截面受弯承载力、斜截面受剪承载力进行计算分析,以探讨玄武岩纤维布对钢筋混凝土梁的加固效果。
According to the codes and specifications of structural strengthening and other interrelated criterions , authors have developed a computer aided design ( cad ) software of the structural strengthening software system of southeast university deep ( seu - deep ) , which filled in the gaps of cad software in the field of structural - strengthening design 摘要根据现行加固规范、规程以及其他相关的标准,编制了东大迪普( seu - deep )结构加固设计软件系统,填补了国内关于结构加固设计领域计算机辅助设计的空白。
As a new structural engineering material , continuous carbon fiber sheet ( cfs ) has many advantages of excellent mechanical properties , such as high intension , convenience in use , low weight , non - dimensional increase , and immunity to corrosion , etc . in recent years , it has been put into use in the strengthening of reinforced concrete 碳纤维布( cfs )作为一种具有良好力学性能的新材料,它具有抗拉强度高、重量轻、抗腐蚀、抗疲劳等优点,在钢筋混凝土结构加固领域的应用越来越广泛。近十几年来,人们对用cfs进行钢筋混凝土结构加固进行了大量研究,集中于利用cfs加固梁、柱、板等结构,证明了其具有很高的推广价值和巨大的社会经济效益。
Secondly , this paper made some theoretic researches on its engineering classfication and applicable scope for this technology ; then combining with project example , this paper carried out scheme design for this technology , and compared some different kinds of underpinning scheme and node and structure design , and put forward the method of " reinforcce steel bar through column " to build pile cap beam , " resistant bend and shear anchored reinforce steel bar " to strengthen column consolidation effect , and the method of " steel plate hoop " to build reinforcing bar connection of the foundation beam , etc . in the process of the consturction scheme research and implement , this paper synthetically elaborated the organizaton for project construction , put forward the construction technical measure of specific aim on the artificial pile , and pile cap beam , and underground adding layer and structure stabilization , and overall structure stabilization and so on . for this project , adopt reinforcing bar concrete to brace hole wall to ensure the safety of engineering in the artificial pile construction , use flexible connection catch to make the cage hoisting easier to simplify the construction process , use the method of earthwork statified symmetrical balance in the process of underground adding layer excavation 本文首先对于基础托换与结构加固技术的目的和意义、国内外发展状况进行了综合阐述;其次对该项技术工程分类及适应范围进行了理论上的分析研究;然后结合工程实例对该项技术进行了方案设计,对比几种不同的托换方案和节点及构造设计,提出了“通筋穿柱法”做承台梁, “抗弯抗剪锚筋法”强化柱加固效果, “钢板箍法”做地基梁钢筋连接点等多项技术;在施工方案的研究和实施过程中,对于工程施工组织进行综合阐述,并就人工挖孔桩、承台梁、地下加层及结构加固、整体结构稳定等专项施工方案提出有针对性的施工技术措施,人工挖孔桩施工采用钢筋砼护壁确保挖孔桩的安全成型,使用柔性连接钩进行钢筋笼吊装简化施工工序;承台梁施工采用梁主筋横穿柱身化学胶锚固等;地下加层综合施工技术采用土方分层对称平衡开挖,分段挖土做筏基结构自稳等;最后对于该工程实施后的效果分析,说明该项综合施工技术的可行性。
Abstract : concepts of probability importance and probability sensitivity of sectional constraints of rc frame structure are put forward and studied in this paper , and their calculation methods are given based on the failure correlation and the achievements on reliability of structural system under minor and strong environment hazard respectively . the conclusions of this paper provide a scientific basis for the disaster - resistant maintenance strategy before and after earthquakes , enhancing the reliability of decision - making for the strengthening of existing structure 文摘:探讨了钢筋混凝土框架结构截面约束的概率重要度及概率灵敏度概念,利用失效相关性及结构体系可靠度方面的研究成果,给出了钢筋混凝土框架结构中各个截面效应约束分别在弱灾害和强灾害环境下的概率灵敏度与概率重要度的计算方法,所得结论可以为在役结构在地震前的预防性维修加固决策及震后结构的维修加固决策提供科学依据,从而提高了在役结构加固决策的可靠性