Finally, it presents some advice and Suggestions for the repairing and strengthening method of fatigue crack of upper part of steel crane-girder in the high-frequency.
最后就重级工作制钢吊车梁上部区域出现疲劳裂缝的修复与加固方案提出了一些意见和建议。
To install the crane span before installation, camber, level of metal structure of main girder bending, trolley rail height difference, gauge deviation, diagonal bridge survey.
安装前要对起重机安装跨度，金属结构主梁的拱度、水平旁弯，小车轨道高低差、轨距偏差，桥架对角线等进行测量。
The working performance and stability of the rock bolt crane girder has always being an important problem in project design and construction.
岩锚吊车梁在施工及运行期的工作性态和稳定性是工程设计和施工中所关注的主要问题之一。
The results show that the crane is unnecessary to replace for its low total stress level and large strength margin of the main girder (main stressed part).
计算结果指出：门机结构总体应力水平较低，其严重受力件主梁具有较大的强度富裕度，不必更换。
Based on this, the stability of the surrounding rock mass and the rock wall crane girder is evaluated.
在此基础上，对洞室围岩及岩壁吊车梁的稳定性进行了评价。
Analysis of deflection of main girder of crane is made according to the result of residual stress test.
根据残余应力测试的结果，对起重机主梁的下挠变形进行了分析。
The paper discussed the sectionalization, the method for finding equation and the drawing of the envelope graph of bending moments of the simple crane girder under the action of crane loads.
论述了在吊车荷载作用下的简支吊车梁的弯矩包络图的分段、方程求法，最后通过实例说明包络图的绘制。
According to actual condition, the strengthening scheme of the crane girder has been brought forward.
根据工程实际情况，提出了吊车梁的加固方案。
The structure of shipbuilding gantry crane has single and double girder types.
造船龙门起重机结构型式分为单梁和双梁。
The rock bolt crane girder is an advanced structure which has played and will play continuously important roles in the construction of hydropower plant in China.
水电站地下厂房岩锚吊车梁是一种先进的结构形式 ，已在我国水电工程建设中发挥了重要作用 ，并且还将会发挥越来越重要的作用。
L single girder gantry crane is a bridge type, suitable for open storage for general cargo railway transport loading and unloading and lifting operations.
型单梁门式起重机属桥架型的一种，适用于露天仓库货铁路沿线进行一般的装卸及起重搬运作业。
Cracks occurred in the main weld joining the web and upper wing panel of an overhead crane girder of I-section, some of which have expanded to the structure material and even led to girder fracture.
桥式起重机采用工字形截面作为主梁，使用多年后该结构形式的主梁上翼缘板和腹板连接的主焊缝及母材多处产生裂纹，甚至发生主梁断裂事故。
In recent years some new profile steels are used for main girder of domestic made electric single girder overhead travelling crane.
近年来国内电动单梁起重机主梁采用一些新截面型式。
Manual single girder bridge crane is a crane.
手动单梁起重机是桥式起重机的一种。
Through bearing capacity test and quite a long period of operation, the structure and anchorage measures of concrete crane girder are proved to be reasonable.
通过承载试验成果及一段时间的运行表明，岩壁吊车梁体形及锚固措施设计是合理的。
Main girder and other components of overhead traveling crane are typical welded structures, the primary failure type of which is fatigue crack.
桥式起重机主梁等构件是典型的焊接结构，其主要失效形式是疲劳断裂。
This machine is called electric single girder crane.
这种机器叫电动单梁起重机。
This paper discusses the question of crane main girder camber and the pre-cambering curve, introducing camber values stipulated in related crane standards in China and abroad.
本文论述起重机主梁的上拱度及预拱曲线的基本原理，介绍了国内外起重机技术标准中规定的上拱度值。
Based on the field load tests of more than 40 years old a reinforced concrete crane girder after strengthening strengthened with CFRP, the strains and deflections under the moving loads were analyzed.
通过对一个已使用40多年的钢筋混凝土吊车梁碳纤维加固后的现场加载试验，分析了加固后吊车梁在吊车移动荷载作用下正截面和斜截面的应变分布规律及挠度变化规律。
The research shows that stress level of the crane structure is low and crane girder has large enough strength margin to assure the safety of using crane under extended service.
研究结果表明门机结构总体应力水平较低，严重受力件主梁具有较大的强度富裕度，可以保证超期服役的安全性。
Single girder crane is a crane.
单梁起重机是桥式起重机的一种。
A new technique is put forward that high-low brace gantry crane wide double guiding girder method to construct bridge.
本文提出了高低支腿龙门吊宽幅双导梁法这种新的桥梁工程施工方法。
The methods of calculation for the structural stability of rock-bolted crane girder include the rigid equilibrium method and the finite element method.
岩锚吊车梁结构稳定计算所普遍采用的方法有刚体平衡法和有限单元法。
Single-girder gantry crane is a gantry crane.
单主梁门式起重机是门式起重机的一种。
As to the above characteristics of the gantry crane, the further study has been made for formwork design, concreting and vibrating and girder in tension.
针对门机大梁以上特点，对梁体模板设计、混凝土浇筑振捣、梁体张拉施工技术难点进行了深入研究。
The advanced hoisting technique and control method of prefabricated box girder over sea including spreader gear design, floating crane improvement and transport barge have been expounded in details.
详细阐述了预制箱梁海上新的吊装工艺和控制方法，包括吊具设计、浮吊改造、运输驳改造。
To solve the problems of the multi-variables and multi-constraints in crane main girder optimization design, the paper proposes a new particle swarm optimization algorithm based on chaos series.
为了解决起重机箱形主梁优化设计中的多变量、多约束问题，提出了一种新的基于混沌序列的粒子群优化算法。
It is an effective method to carry out regularly inspection on steel crane girder structures in order to prevent from fatigue failure.
对在役钢结构吊车梁进行定期、不定期的检查是避免发生疲劳失效的最有效方法。
The further excavation of underground powerhouse will affect the stress distribution of system bolts and rock mass near crane girder.
地下厂房的继续开挖对于吊车梁系统锚杆和周围岩体的应力分布有较大影响。
The further excavation of underground powerhouse will affect the stress distribution of system bolts and rock mass near crane girder.
地下厂房的继续开挖对于吊车梁系统锚杆和周围岩体的应力分布有较大影响。
应用推荐