起重机钢结构的疲劳寿命计算，可采用应力比法或应力幅法。
Calculation of crane metal structure on fatigue life may be carried out according to either stress ratio or stress amplitude in related structure.
本文以600吨龙门吊为例研究了大型起重机钢结构的焊接制造工艺。
In this paper, 600 tons gantry was studied as an example of the construction process of large-scale crane structure.
文章探讨了起重机钢结构疲劳试验及疲劳设计的方法和内容，提出了新的观点。
This paper probes into the methods and contents of fatigue tests and fatigue design of crane's steel structure, and advances some new opinions.
本文介绍了塔式起重机钢结构安全寿命评估中的应力幅及应力幅谱系数的计算方法和过程。
This paper describes the calculation method and process of stress amplitude and stress amplitude spectrum to evaluate the safety life time of steel structure for tower crane.
本文论述几种起重机钢结构焊缝裂纹产生的原因，提出焊缝裂纹的修复方法和起重机钢结构设计、制造中防止焊缝开裂的改进措施。
This article discusses causes of weld cracking in crane's steel structure, recommends ways of remedy and makes proposals concerning design and fabrication to avoid cracks.
并根据其疲劳类型，确定选用安全寿命设计方法对塔式起重机钢结构进行疲劳分析，并应用名义应力法估算塔式起重机钢结构的疲劳寿命。
According to the fatigue type, use safe-life design method to study tower crane's fatigue, and choose nominal stress approach to estimate the life of tower crane.
起重机走道。钢结构。计算、设计与制造原则。说明。
Craneways; Steel structures, Principles for calculation, design and construction, Explanations.
起重机走道。钢结构。计算、设计与制造原则。说明。
Craneways; Steel structures, Principles for calculation, design and construction, Explanations.
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