铁道捣固机构三维设计外文翻译资料

 2022-03-28 08:03

英语原文共 145 页，剩余内容已隐藏，支付完成后下载完整资料

SECTION 4 STRUCTURAL SPECIFICATIONS

第四章 结构规格

  1. GENERAL

概括

The Contractor shall have the structural analysis of the crane performed and/or carefully and thoroughly reviewed by a qualified professional structural engineer, registered to practice structural engineering in his state of residence or country of residence. He shall be experienced in design of crane structures and shall sign each calculation sheet and structural drawing, certifying that he is responsible for the adequacy of the structural design. He shall visually inspect the completed structure and satisfy himself that the classification of members, joints, and other details required for the fatigue stress analysis is appropriate and that no attachments or fixtures of any kind other than those designed on the drawing have been attached to the structure. The responsible structural engineer shall certify in writing that he has reviewed the completed structure and that it is constructed in accordance with his design assumptions.

承包商应对起重机进行结构分析和/或由合格的专业结构工程师进行仔细彻底的检查，并在其居住区或居住国登记执行结构工程。他须在起重机结构设计方面具有丰富的经验，并应在每张计算表和结构图上签名，以示他对结构设计的充分性负责。他需要目视检查完成的结构，并确认疲劳应力分析所需的构件，接头和其他细节的分类是合适的，并且除了附图上设计的附件或附件之外，不得附加任何类型的附件或附件 结构体。该负责结构工程师应以书面形式证明，他已审查完毕结构，它是按照他设计的假设构建证明。

The criteria specified herein represent minimum acceptable standards. If, in the

Contractorrsquo;s opinion, any of the standards specified are inadequate or insufficient for the use intended, it shall be the Contractorrsquo;s responsibility to use more stringent criteria.

这里规定的标准是最低可接受的标准。如果承包商认为，任何具体规定的标准都不足以或不足以满足预期的使用，承包商有责任使用更严格的标准。

All structural calculations including structure finite element analysis shall be submitted for Progress Energy Services Company, LLCrsquo;s Designated Representativersquo;s review.

包括结构有限元分析在内的所有结构计算应提交给能源服务公司，有限责任公司的指定代表进行审查。

Structural design shall be based strictly on FEM (for shape factors, etc), and only the stability calculations, wheel loads, tie downs, loads and stowage pin loads shall be based on the results of the wind tunnel tests.

结构设计应严格基于有限元法（对于形状因素等）和稳定性计算，车轮载荷，系杆，载荷和配载销载荷应基于风洞试验的结果。

  1. CRANE STRUCTURE

起重机结构

The structure shall consist of trapezoidal box-type members for the main frame, boom, and girder structure. The boom structure shall be a dual (2) box girder type design. Tubular members will be acceptable for bracing members. Wire ropes or strands shall not be used for structural members. Horizontal structural members shall be provided on the gantry frame for the support of the Machinery House, hoists and trolley machinery (if rope type), and electrical equipment, and shall provide runway and support for the trolley including the trolley backreach.

结构应由主框架，悬臂,梁结构的梯形箱形构件组成。悬臂结构应为双（2）箱梁式设计。管状构件可作支撑构件。结构构件不得使用钢丝绳或绞线。水平结构构件应设置在龙门架上，用于支撑机械房，起重和小车机械（如果采用绳索类型）和电气设备，并且应为小车（包括小车后座）提供跑道和支撑。

The boom shall be supported by forestays. Forestays shall be structural shapes with link hinges. Wire rope forestays are not acceptable.

吊臂应由前轮支撑。前轮应为带连接铰链的结构形状。不可以用钢丝绳前端。

All members shall be amply proportioned to provide a rigid structure. Support members of the trolley travel system shall be cambered as per the requirements of FEM. Maximum deflections for operating conditions shall be included in the calculations submitted to Progress Energy Services Company, LLCrsquo;s Designated Representative for review. The crane design shall be such, that the maximum horizontal deflection from the waterside leg to the boom tip in any direction is less than 75mm when the Rated Load is at the maximum outreach under maximum operating wind load condition. The gantry design shall be such that the horizontal deflection from the waterside leg to the boom tip in the gantry travel direction at trolley rail level shall not exceed 200mm when the gantry is stopped by the emergency stop while traveling at rated speed with trolley at maximum outreach. Stresses at this emergency stop condition shall comply with F.E.M. The Crane design shall be such that the maximum vertical deflection between forestays and at the boom tip shall not impede trolley operations at the speeds and accelerations set forth in the Specifications under maximum operating conditions. In addition, deflections of members shall be limited to such that operations are not impaired and the Crane operational requirements are not affected. The Contractor shall submit calculations and supporting documentation which proves that the proposed deflections meet this criteria. The calculated vertical deflection and camber to be manufactured into the boom shall be submitted for review by Progress Energy Services Company, LLCrsquo;s Designated Representative.

所有部件应当以充分比例来提供一个刚性结构。小车行走系统的支撑构件应按照有限元法的要求弧面加工。操作条件的最大偏差应包括在提交给有限责任公司指定代表审查的进展能源服务公司的计算中。起重机的设计应该是这样的，即当最大工作风力条件下额定载荷达到最大伸出量时，从水边支腿到悬臂末端的任何方向的最大水平挠度小于75mm。龙门架设计应使得在台车以额定速度行驶时，当台架由于紧急停车而停止时，在台车轨道水平处的龙门行进方向上从水边腿到臂架顶端的水平偏转不应超过200mm。紧急停止状态下的压力应符合应力的有限元分析。起重机的设计应使得在最大运行条件下，在前轮和悬臂顶端之间的最大垂直挠度不应妨碍规范中规定的速度和加速度。此外，部件的挠度应限于操作不受损害和起重机操作要求不受影响。承包商应提交证明建议的挠度符合这一标准的计算和佐证文件。计算到生产臂的垂直挠度和弯度应提交进度能源服务公司，有限责任公司的指定代表审查。

Excessive vibrations of the crane or vibrations harmful to the crane shall be avoided. The Contractor shall submit detailed calculations that will demonstrate that the design of the trolley travel system and the gantry structure will result in a natural frequency of over 0.8 Hz in the trolley travel direction.

应避免起重机的过度振动或对起重机有害的振动。 承包商应提交详细的计算结果，以证明电车行驶系统和门架结构的设计将导致电车行驶方向的固有频率超过0.8 Hz。

All members, except where not practical and approved by Progress Energy Services Company, LLC, shall be made airtight by seal welding. Sealed members shall be pressure tested to 1.5psig using soap film to demonstrate air tightness. All airtight structures shall be designed for air test loads and calculations submitted for review by Progress Energy Services Company, LLCrsquo;s Designated

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