钢筋混凝土结构的补强加固

本文论述了钢筋混凝土结构加固补强的目的、步骤及计算方法,补强过程中应注意的问题。     

碳纤维布加固桥梁结构新技术的研究

碳纤维布补强加固混凝土结构技术作为一种新兴的、技术含量高的建筑物补强加固方法，具有很高的研究、推广价值和巨大的社会经济效益。碳纤维是一种新型建材，因其质轻、耐腐蚀、片材很薄、抗拉强度高而被广泛应用。本文对碳纤维布补强加固混凝土结构的受力特性和破坏机理进行了深入分析，并对碳纤维材料与粘接剂的材料性能、碳纤维布约束混凝土的受力特性、碳纤维布加固设计计算、施工工艺等各个方面进行了全面阐述。     

钢筋混凝土板的加固补强初探

分析钢筋混凝土板的加固补强方法,探讨其可行性。     

工业厂房钢筋混凝土排架结构构件的质量鉴定与加固处理

某厂钢筋混凝土排架结构厂房,由于年久失修,钢筋混凝土构件破损严重,不能安全使用。采取综合加固方法进行加固补强,效果良好,本文对各种加固方法作了详细叙述。     

浅谈钢筋混凝土结构的补强加固措施

为提高结构、构件的强度稳定性及耐久性,必须重视钢筋混凝土结构的补强加固工程及注意事项。     

钢筋混凝土结构火灾后受损程度评定及加固补强

本文从建筑结构的角度系统地介绍了钢筋混凝土结构火灾后受损程度的评定等级方法及相 应的加固补强措施。     

长兴桥加固试验研究简介

本文探讨了以体外预应力法加固梁桥时,控制补强钢筋张拉力的计算方法,经与实测值比较,精度较高,证实此法可行。     

某工程框架柱的加固处理

依据工程实例,论述了某工程为钢筋混凝土框架结构,由于加层,其原有框架柱的承载力不满足要求,需要加固补强的处理措施.     

大兴安岭林区桥梁下部构造病害成因分析与加固整治的方法

本文通过对大兴安岭林区桥梁下部构造的病害调查,研究分析了产生病害的原因;同时提出了一些对桥梁下部构造进行补强加固的措施和方法。     

建筑修复胶

建筑修复胶该修复胶适用于建筑物、尤其是结构件方面的补强加固。如厂房或建筑物的大梁上的裂纹，建筑物的破坏部位（危房加固）等还可采用该胶来提高建筑物的承载能力。使用该胶进行修复加固省工省时。尤其对厂房的加固修复可在不停工的情况下进行。胶用量约３公斤～５公...     

饱和软粘土深层搅拌加固法原理初探

随着工程建设的发展,在深厚软土层上建造大型工业建筑、高层房屋及港口码头工程日益增多,因此软粘土加固技术越来越受重视。纵观现有的加固方法各有其不适应性,因此需要大力开发研究新的加固技术。     

V形刚架在跨线桥中的应用

通过海林市南出口公铁立交桥的方案设计,经对比,论证了V形刚架配挂梁的主跨结构型式的优越性及适用性。     

Characterization of wood-based multi-material systems under dynamic impact stress

ABSTRACT

Due to its naturally grown properties, wood has played a rather subordinate role as a material for technical applications up to now. In this paper, multi-material systems based on veneers of beech (Fagus sylvatica) with different reinforcing variants were investigated. In addition to the influence of different adhesive systems (urea formaldehyde and polyurethane), the effect of reinforcing by aramid fiber fabric and stainless steel foil in different climates was examined. At the center of the investigations were dynamically sudden loads, in the form of impact bending and dart drop tests (penetration and impact mode). It has been shown that the use of the reinforcing materials leads to a significant improvement in material properties. The penetration energy of the composites reinforced with the aramid fiber fabric could be increased by 43%. The maximum force in the dart drop test (impact mode) could be increased by 29% with the stainless steel foil, the damping decreased by 48%. The aramid fiber reinforcement achieved an increase in impact resistance by 27% in impact bending test, the steel reinforced achieved an increase of 39%. A clear dependency on both, the climate and the adhesive within the composite, could be demonstrated.     

Effect of lintel on horizontal load-carrying capacity in post-beam structure

This study is aimed to evaluate whether lintel has structural effect because it has not been categorized as a structural member. This study experimentally evaluated the horizontal load-carrying capacity of post-beam timber frame structures with bi-linear model and energy dissipation mechanism. To evaluate the effect on horizontal performance of lintel which has been widely used as wall frame in Korean traditional post-beam structure, two frames were tested in different types. One had no lintel and the other one had lintel at the height of 800 mm, respectively. Cyclic loading tests were conducted for each frame according to the standard loading protocol. Frame which had lintel showed slightly higher stiffness. And it showed noticeably significant energy dissipation performance after yield point of the joint. And that leads to the conclusion that lintel has structural effect and it should be considered as an important factor when evaluating horizontal performance of the structure after yield point of the joint.     

钢筋砼结构中钢筋腐蚀裂缝分析

本文论述了钢筋砼结构中钢筋腐蚀裂缝对结构受力影响,分析了钢筋腐蚀的主要原因;并阐 述了预防钢筋腐蚀的一般预防措施和延缓钢筋锈蚀的措施及钢筋腐蚀的修补方法。     

钢筋砼工程质量低劣的原因剖析

该文对钢筋砼工程质量问题进行了较全面的分析和论述,通过实践论证效果显著。     

钢筋混凝土斜腿刚架桥结构型式初论

本文对钢筋混凝土斜腿刚架这种超静定结构桥梁型式就计算模式的确定,桥梁的纵断面选择做了较细致的分析。     

钢筋混凝土悬臂梁的构造问题

针对目前的设计和施工现状,对纵向钢筋的构造和弯曲钢筋的合理设置两个问题进行详细分 析,并介绍了悬臂梁中采用弯起钢筋存在的缺陷。     

底部框架砖房抗震设计中应注意的问题

作者根据哈尔滨实际情况,论述了底部框架砖房防震设计中应注意的问题。对指导哈尔滨城市建设,具有一定的实用性。     

思澜二级公路改建工程石拱桥加固利用

公路改建工程主要依托老路进行,旧桥加固利用是公路改建工程中重要的环节,对降低工程造价、缩短施工周期、缓解施工中的保通压力有其现实意义,针对思澜公路石拱桥加固利用,对老石拱桥加固技术和经济效益进行探讨。