文章介绍了在V型峡谷地形地质条件下结合工程实际情况,设计重庆茶林坪乌江大桥拱肋安装施工方案时取消了缆索系统塔架并优化了后锚碇体系,形成了无塔缆索吊机总体布置与锚索式主锚碇体系,阐述了锚梁与锚索式主锚碇锚索结构形式,总结了预应力锚索锚固技术的设计与施工关键技术。

Based on the engineering condition of Wujiang River Bridge in Chalinping, which is a V-shaped valley, the construction plan is adjusted by canceling the tower frame of cable system and optimizing back anchorage system to establish non-tower cable crane layout and anchorage-cable system. The structural form of anchorage beam and main anchorage cable is elaborated and the design and key construction techniques of pre-stressed anchor-age-cable fixation technology are summarized.

以缆索吊装理论为基础，对缆索在桥梁施工中的吊装作业情况进行分析，建立缆索吊装设计数学模型，利用Visual Basic6．0实现系统设计。系统界面友好，操作简便，改变了繁琐的人工计算过程。实现了给定参数输入，通过计算可以得到主索、起重索、牵引索、风缆索、塔架、地垄及绞盘机功率等精确的设计结果，可为缆索吊装设计提供科学依据。

Based on the cableway erection theory,the cableway erection operation in bridge construction is analyzed and a mathematical model for cableway erection is established, with Visual Basic 6.0 used to realize system design. The system interface is user friendly, easy to operate and has changed trivial process of manual calculation and achieved the function of given parameters input.Through calculation,the accurate design result of skyline, liftline, haulline, windline, tower and ridge and the winch power are obtained, thus providing basis for the design of cableway erection.

新建南广铁路西江特大桥为跨度450 m的中承式钢箱提篮推力式拱桥。为吊装其钢梁节段,需要研究技术可靠、经济合理的大吨位缆索吊机设计方案。结合既有经验,根据本桥吊重大、地形地质条件差等特点,研究确定了总集中荷载为4 200 kN的横移式缆索吊机总体方案,针对性地进行索鞍、缆塔、风缆、锚碇等各分项的设计。计算及应用表明,该种横移式缆索吊机技术上完全可行,经济优势突出。

The Xijiang River Bridge, which is a super major bridge on newly-built Nanning-Guangzhou Railway, belongs to a kind of X-style half-through arch bridge with steel box and thrust force. For hoisting its steel girder segments, it was necessary to study out a design scheme of large-tonnage cable crane with reliable technology and reasonable economy. Based on existing experience, according to this bridge''s construction characteristics, such as heavy hoisting load, poor topographical and geological conditions and so on, a general design scheme of 4 200 kN transversely-movable cable crane was determined after study. And then its component parts, including the cable saddles, towers, wind-cables, anchorage, were designed respectively. Calculation and application suggest that this kind of cable crane is technically feasible and has a remarkable economic advantage.

基于从欧洲最新引进的自行式缆索起重集材机（KOLLER-K303H）及集材作业技术，“陡坡山地森林择伐作业技术及其设备引进”项目组对森林采运的缆索集材作业工艺进行了研究，旨在为提高森林集材作业的效率、降低成本，减轻集材作业过程对森林生态系统的破坏，并消化吸收和完善所引进的集材作业技术，为其推广应用做准备。根据引进设备的机构功能特点，本研究详叙了“塔架上置式”和“塔架下置式”集材作业工艺技术，及探讨了“正反坡同步集材”和“超范围集材”的集材技术。伐区实地的集材试验结果表明：本研究所探讨的集材作业工艺效率高，能较好地适应中国南方林区复杂地形集材作业的需要。

In order to improve efficiency of logging operation in forest, reduce harvesting cost and decrease the destruction in the skidding process to forest ecology system, and digest, absorb and perfect the logging technology introduced from the Europe and prepare for its popularization and application, based on the latest imported cable yarding machine (KOLLER-K303H) and yarding technology from Europe, the steep mountain forest selective cutting operation technology and equipment introduced have been studied. According to the functions and characteristics of introduced equipments, the yarding operation technology of“tower overhead type”and“tower underneath type”were reported, and the skidding techniques of positive and negative slope synchronously logging and skidding wood beyond the scope (normal distance) were discussed. The results of field yarding experimental show that the yarding operation processes given in this research had a high efficiency, were able to adapt to the n

主缆索股安装及线形控制是自锚式悬索桥施工中的关键技术，结合南京小龙湾自锚式悬索桥展开研究。提出以“梁平塔直”为自锚式悬索桥的控制目标，采用倒拆与正装迭代两种算法，得到主缆的成桥线形、空缆线形、无应力长度和索鞍预偏量等；分析了主缆鼓丝的根源；通过对空缆安装线形进行精确控制，经过吊杆分轮张拉和索鞍顶推，使主缆成桥线形满足设计要求，并使主塔和主梁的受力合理，可为同类自锚式悬索桥施工提供参考。

Main cable installation and its alignment control are the most important procedures during the e -rection of self-anchored suspension bridges .An investigation into the key issues of the procedures has been carried out in this paper , taking the Nanjing Xiaolongwan self-anchored suspension bridge as a study case . The proposed control objective is aimed at “leveling the box girder and straightening the tower”.The back-ward and the forward iteratives are carried out in order to obtain the cable configuration at completion , cable configuration at free-hanging, the cable unstressed length and saddle offset displacement , etc.The main rea-son for cable wire bulge has been identified .By precisely controlling the cable configuration at free-hanging , and tensioning the hangers and pushing the saddles into its final position stepwisely , the main cable configura-tion reaches its designated precision .And the stresses of the main tower and girder falls into a rational range . Thi