锚索在加固岩质边坡中的研究与应用

结合渝怀铁路路堑岩质边坡工程，在分析边坡工程地质条件的基础上，介绍了用锚索加固边坡的步骤，为相关边坡工程的加固提供借鉴经验。     

预应力钢结构斜拉索的挂索与张拉方法探讨

预应力斜拉索吊拉结构中斜拉索施工的关键在于正确选择挂索方法以及如何采用普通预应力张拉千斤顶设备进行索的张拉 ,本文对此进行了探讨。     

碳纤维布滞后应变的简化计算方法

碳纤维抗弯加固中截面受拉边的初始应变（即碳纤维布的滞后应变）一般不可忽略，而按《碳纤维片材加固修复混凝土结构技术规程》（送审稿）的计算方法却相当繁琐。提出了计算碳纤维布滞后应变的两种简化计算方法，以便于工程应用。     

岩石直接拉伸破坏中的能量耗散及损伤特征

采用新近发展起来的拉伸式Ｈｏｐｋｉｎｓｏｎ冲击装置（ＳＨＴＢ），成功地实现了对岩石试样的动态直接拉伸加载。利用圆柱形拉伸强度试样和切口圆柱拉伸断裂试样，并结合静态拉伸实验设备ＭＴＳ材料试验机，进行了岩石的动态拉伸强度、动态拉伸断裂、静态拉伸强度、静态拉伸断裂共４种情况下的拉伸破坏实验，并将这４种实验条件下的拉伸破坏试样沿其纵剖面剖开，利用光学显微镜观察岩石在其纵剖面上的破坏特征。观察表明，岩石拉伸破坏所消耗的能量与岩石破坏时所形成的内部损伤有着十分密切的联系。     

无粘结预应力混凝土结构的施工技术及应用——东翠花园住宅楼板工程实例

利用无粘结预应力技术,使住宅空间更为灵活。同时,无粘结预应力混凝土楼面结构对克服混凝土开裂很有帮助,且施工方便。本工程注意选择配套锚具及张拉设备,控制张拉应力及伸长率,使无粘结预应力达到质量要求。     

山东沭河特大桥T梁制作及安装技术

山东沭河特大桥T梁为25、30m长有粘结预应力梁,采用现场制作。钢绞线采用单束两端同时张拉,张拉后采用C50混凝土封锚。梁重45~65 t,根据现场地形特征分别采用龙门吊架和双导梁架桥机进行T梁安装。     

管桩生产的质量管理重点与建立行业监管的建议

通过2004年对云南部分预应力管桩生产厂进行的生产工艺调查和混凝土现场见证取样试验,对影响管桩生产质量存在的问题进行了全面、深入的研究和分析,提出了一些管桩生产质量的管理重点和建立行业对管桩生产企业加强监督管理的建议.     

LabVIEW平台下的纤维缠绕张力检测系统

提出了LabVIEW平台下的纤维缠绕张力检测系统。内容主要包括该检测系统的工作原理、软件系统和硬件系统。同时介绍了软件LabVIEW。     

预应力技术在山西博物馆超长结构中的应用

介绍了在山西博物馆超长的墙、梁、板结构中采用的无粘结预应力混凝土施工成套技术 ,指出通过控制施工过程 ,可以确保工程质量 ,缩短工期 ,降低成本     

Synergistic effect of salt ions and water-soluble amphiphilic compounds of acidic crude oil on surface and interfacial tension

This study investigated the effect of solubility of amphiphilic compounds of acidic crude oil in water on the surface and interfacial tension (IFT) with NaCl, MgCl₂, CaCl₂, and Na₂SO₄ salts. Accordingly, distilled water, along with the salts mentioned in zero ionic strength up to 2 mol were put in contact with crude oil to become saturated with amphiphilic compounds. The effects of these compounds were investigated on the properties of contact water by pH, total organic carbon (TOC), FTIR (Fourier transform infrared spectroscopy), water-air surface tension (ST), and water-n-decane IFT tests. The results showed that some of the organic components of crude oil, especially acidic and basic compounds, are present or soluble in water, which have a significant effect on reducing the surface and IFT. The IFT reduction of water-n-decane was greater than the water-air ST system. Also, the observations showed that for both NaCl and Na₂SO₄ salt water, with increasing ionic strength of water, there was an optimum salinity within the range of 0.1-0.25 mol/L for both salts with the amount of surface and IFT minimized at this point. In the other two salts, this point was delayed upon elevation of ionic strength and was observed at high salinity. In this case, divalent cations reduce tension rate compared to monovalent cations. Due to solubility of acidic and basic groups in water, pH of salt water illustrates an acidic trend. Results of the FTIR test confirmed solubility of these compounds as well.