• 游客 购买了资源 2007年8月13日,湖南省湘西自治州凤凰县正在建设的堤溪沱江大桥发生坍塌事故,造成64人死亡22人受伤,直接经济损失3974.7万元。 (一)事故原因和性质 1.直接原因。 由于大桥主拱圈砌筑材料未满足规范和设计要求,拱桥上部构造施工工序不合理,主拱圈砌筑质量差,降低了拱圈砌体的整体性和强度,随着拱上荷载的不断增加,造成1号孔主拱圈靠近0号桥台一侧约3~4m宽范围内,即2号腹拱下的拱脚区段砌体强度达到破坏极限而坍塌,受连拱效应影响,整个大桥迅速坍塌。 2.间接原因。 ①施工单位项目经理部擅自变更原主拱圈施工方案,现场管理混乱,违规乱用料石,主拱圈施工不符合规范要求,在主拱圈未达到设计强度的情况下就开始落架施工作业。②建设单位项目管理混乱,对发现的施工质量问题未认真督促施工单位整改,未经设计单位同意擅自与施工单位变更原主拱圈设计施工方案,盲目倒排工期赶进度,越权指挥,甚至要求监理不要上桥检查。③监理单位未能制止施工单位擅自变更原主拱圈施工方案,对发现的主拱圈施工质量问题督促整改不力,在主拱圈砌筑完成但强度资料尚未测出的情况下即签字验收合格。 3.事故性质: 这是一起生产安全责任事故。 (二)对事故责任人员及责任单位的处理 1.移送司法机关处理人员。移送司法机关处理人员共13人。其中:监理公司现场监理处副处长兼现场监理余xx,涉嫌工程重大安全事故罪;现场监理处处长李xx,涉嫌工程重大安全事故罪。 2.给予党纪、政纪处分人员。给予党纪、政纪处分人员共19人。其中:监理公司党支部书记、副经理续xx,对事故发生负有重要领导责任,给予行政记大过、党内警告处分;监理公司总工汤x,对事故发生负有主要领导责任,给予行政撤职、党内严重警告处分。 3.对事故有关人员的处理…… 4.对事故有关单位的处理。……暂扣监理有限公司“工程监理证书”等有关证照。 (三)中央电视台专访的专家视点 沱江大桥突然坍塌存在以下几个问题: 1.为了州庆缩短大桥养护期。沱江大桥施工工期过紧,施工中变更了主拱圈砌筑的程序,拱架拆卸过早。据了解,主拱圈的养护期是28天,第19天开始卸架,养护期不够,比规定少了9天。因为养护期减短,大桥拱圈承载能力减弱。 2.桥下地质复杂,桥墩严重裂缝。施工中就已经发现桥墩的地质构造比较复杂,而且还发现0号桥墩下面有严重裂隙。施工中虽然对此处进行了一些处理,但现在看来,没有从根本上解决问题。大桥垮塌的方向从0号桥墩开始,像积木一样顺一个方向垮塌。 3.所用沙石含土量过高。主拱圈砌筑质量有问题。砌筑要使用料石,但事故后发现,塌下来的主拱圈中还有片石;砌筑的砂浆不饱满,有空隙、空洞;沙石含泥量比较高,影响混凝土的黏结力。 4.工程层层分包,质量管理混乱。质量管理方面存在问题。施工中有工程变更,却没有及时告知监理单位;监理单位发现了问题,没有及时向上级部门反映;工程分包单位多,层层分包。 问题: 1.上述案例中,监理工程师巡视发现施工单位未按主拱圈施工方案施工时,该如何处理? 2.安全监理工作中,监理工程师该如何检查分包单位? 3.事故发生后,监理工程师应做哪些工作? 问题: 1.上述案例中,监理工程师巡视发现施工单位未按主拱圈施工方案施工时,该如何处理? 2.安全监理工作中,监理工程师该如何检查分包单位? 3.事故发生后,监理工程师应做哪些工作?
  • 游客 购买了资源 某工程,施工合同中约定:工期19周;钢筋混凝土基础工程量增加超出15%时,结算时对超出部分按原价的90%调整单价。经总监理工程师批准的施工总进度计划如下图所示,其中A、C工作为钢筋混凝土基础工程,B、G工作为片石混凝土基础工程,D、E、F、H、I工作为设备安装工程,K、L、J、N工作为设备调试工作。
  • 游客 下载了资源 2024年秋江苏开放大学营销与策划050270计分作业3:【课程实训八】撰写产品营销策划书
  • 游客 购买了资源 2024年秋江苏开放大学营销与策划050270计分作业3:【课程实训八】撰写产品营销策划书
  • 游客 购买了资源 甲公司为上市公司,适用的企业所得税税率为25%,相关资料如下:
  • u******* 签到打卡,获得1金币奖励
  • 游客 购买了资源 甲公司生产销售A产品,为扩大销售,并加强应收账款管理,公司计划对信用政策作出调整,有关资料如下:
  • 游客 下载了资源 上海开放大学大学英语(2)第四次网上记分作业
  • 游客 下载了资源 上海开放大学大学英语(2)第四次网上记分作业
  • 游客 下载了资源 上海开放大学大学英语(2)第四次网上记分作业

国开电大理工英语4形考任务单元自测8答案

题目顺序是随机的,使用查找功能(Ctrl+F)进行搜索

题目:   by the promise of these tiny tubes, people are already working to turn the Space

答案:Fueled

题目:— According to a report of what holidays in the future might look like, a trip to the Moon

答案:Spectacular

题目:— How do you like Anne Hathaway

答案:She is amazing

题目:— Let’s go to this movie and see what exciting experience it will bring to us.

答案:Can’t wait to watch it.

题目:— Space travel must be very very expensive.

答案:Of course.

题目:— You need to believe that space tourism will grow and get cheaper. Maybe there is

答案:What is it?

题目:Absolutely, that movie           and I must admit that its director is brilliant.

答案:took my breath away

题目:Everything we do has the potential      creating some bad.

答案:for

题目:I think the benefits of opening up space far      the damage that we can see.

答案:outweigh

题目:If Gardener      , who will take care of us?

答案:leaves

题目:Our part of the mission is nearly complete and the new crew will           for us.

答案:take over

题目:The atlas is normally kept by the big window but now it is      to the wall right next to

答案:stuck

题目:There will be a space hotel in Barcelona Island,       you can “experience” space travel

答案:where

题目:When we were students we      often stay up all night.

答案:would

题目:You           the Inception, since I remember once you discussed its main plot with Cathy.

答案:must have watched

“二、阅读理解:阅读下面的短文,根据文章内容从A、B、C三个选项中选出一个最佳选项。
(教材课文原文)
_DIARY OF A SPACE ZUCCHINI         _July 1
Today Gardener and his crew will depart in their seed pod; the replacement crew is ready to {A. carry away; B. carry on; C. carry through} in their place. He is wearing his space suit undergarments. Not too stylish but {A. functional; B. nonfunctional; C. conjunctional}. He gave all of us an extra long smell. His nose twitched with the slightest tickle from the leaf hairs on little Zuc. He said that what will be is for the best. It has been a wonderful journey; one chapter is closing, another is {A. to be opened; B. open; C. opening}. He had tears in his eyes, not just a small drop at the corners but a pool that was making him {A. to blink; B. blinking; C. blink}. He reached up and {A. turned up; B. turned out; C. turned down} the light. In the frontier you should not be afraid of the dark.”

答案:子问题 1:B. carry on; 子问题 2:A. functional; 子问题 3:C. opening; 子问题 4:C. blink; 子问题 5:B. turned out

“二、阅读理解:阅读下面的对话,选择合适的内容将对话补充完整。
(教材对话原文)
JANET: Hey, how about getting together for a movie tonight?
DANNY: Sure. {A; B; C; D; E}
JANET: Well, let me check the Internet. What about the Interstellar?
DANNY: Wow, I learn that it stars Anne Hathaway, my favorite actress.
JANET: Well, {A; B; C; D; E}, but I am more interested in the film director.
DANNY: Who is it?
JANET: Christopher Nolan, a British-American film director. You must have watched the Inception, one of his masterpieces.
DANNY: Absolutely, that movie took my breath away and I must admit that its director is brilliant. {A; B; C; D; E}
JANET: Obviously it is a sci-fi film, which features a crew of astronauts who travel through a wormhole in search of a new home for humanity.
DANNY: {A; B; C; D; E}
JANET: The screenplay was written by Christopher and his brother Jonathan Nolan.
DANNY: You are such a great fan of sci-fi movie.
JANET: Yeah, I am really into this. So let’s go to this movie and see what exciting experience it will bring to us.
DANNY:{A; B; C; D; E}
A. she is amazing
B. What about the screenplay?
C. Can’t wait to watch it.
D. So could you tell me more about Interstellar?
E. What’s playing?”

答案:子问题 1:E; 子问题 2:A; 子问题 3:D; 子问题 4:B; 子问题 5:C

资源下载
下载价格2
点点赞赏,手留余香 给TA打赏

AI创作

支持多种货币
支持多种货币付款,满足您的付款需求
7天无忧退换
安心无忧购物,售后有保障
专业客服服务
百名资深客服7*24h在线服务
发货超时赔付
交易成功极速发货,专业水准保证时效性

站点公告

开放大学课程作业辅导,有需要扫码加微信

显示验证码

社交账号快速登录

微信扫一扫关注
扫码关注后会自动登录