1～3．5吨叉车门架槽钢柔性生产线研制

本文通过对1～3.5吨叉车门架槽钢柔性生产线研制的介绍,讲述了研制生产线理由、生产线总体方案、研制过程需要解决的几个关键问题以及生产线使用效果。     

见义勇为引发的索赔案

已有过一次救人经历的施红权,当发现有一面包车栽入冰河时,他奋不顾身地扑入水中,进行了一次惊心动魄的大营救 今年39岁的施红权,是江苏启东市和合镇柳步桥的村民.他生活的这个村,位于东海之滨,是个美丽富饶的小村子.但施红权家并不富裕,因为施红权没有手艺,仅凭一亩三分地过日子.施红权家里虽穷,但为人善良,乐于助人,两年前曾经救过一个落水的孩子,平时村民们有什么困难,首先想到的是请他帮忙.     

Model of Vertical Product Differentiation Based on Triangular Distribution

IntroductionMany researchers[1-6]investigated the product dif-ferentiation from the premise that consumer prefer-ences comply with uniform distribution. But thispremise is not completely correct; it obviously neg-lects such a fact that considering consume…     

关于新造客车的209P型转向架摇枕与构架侧梁发生磨碰现象的原因分析及建议

对新造客车的209P型转向架摇枕与构架侧梁发生磨碰现象的原因分析及提出改进建议。     

Optimization of PERT Network and Compression of Time

In the traditional methods of program evaluation and review technique （PERT） network optimization and compression of time limit for project, the uncertainty of free time difference and total time difference were not considered as well as its time risk. The authors of this paper use the theory of dependent-chance programming to establish a new model about compression of time for project and multi-objective network optimization, which can overcome the shortages of traditional methods and realize the optimization of PERT network directly. By calculating an example with genetic algorithms, the following conclusions are drawn： （ 1 ） compression of time is restricted by cost ratio and completion probability of project; （2） activities with maximal standard difference of duration and minimal cost will be compressed in order of precedence; （3） there is no optimal solutions but noninferior solutions between chance and cost, and the most optimal node time depends on decision-maker＇s preference.     

水下超百米长大直径钻孔灌注桩施工技术

水下超百米长大直径钻孔灌注桩有它自己的特殊性。因此只有加强施工技术的研究,加强质量控制,才能达到桩的设计要求。经过跨娄江航道连续梁拱桥水下超百米长大直径钻孔灌注桩的施工和施工技术的研究,总结出一套较成熟的施工技术。文章通过灌注桩现场施工的实例,简介水下超百米长大直径钻孔灌注桩施工技术。     

松动爆破在路基开挖中的应用

近年来,随着高等级公路的大规模建设,松动爆破技术在公路工程中得到了越来越广泛的应用。本文就松动爆破的钻孔布置、装药、堵塞、起爆网络的铺设以及安全防护等做了详细叙述,以指导后续施工并为类似工程提供参考。