问题 问答题 案例分析题

某办公楼工程,建筑面积35000m2,地下2层,地上15层,框架筒体结构,外装修为单元式玻璃幕墙和局部干挂石材。场区自然地面标高为-2.00m,基础底标高为-6.90m,地下水位标高-7.50m,基础范围内土质为粉质黏土层。

在建筑物北侧,距外墙轴线2.5m处有一自东向西管径为600mm的供水管线,埋深1.80m。施工单位进场后,项目经理召集项目相关人员确定了基础及结构施工期间的总体部署和主要施工方法:土方工程依据合同约定采用专业分包;底板施工前,在基坑外侧将起重机安装调试完成;结构施工至地上8层时安装双笼外用电梯;模板拆至5层时安装悬挑卸料平台;考虑到场区将来回填的需要,主体结构外架采用悬挑式脚手架;楼板及柱模板采用木胶合板,支撑体系采用碗扣式脚手架;核心筒采用大钢模板施工。会后相关部门开始了施工准备工作。

合同履行过程中,发生了如下事件。

事件1:施工单位根据工作总体安排,首先将工程现场临时用电安全专项方案报送监理工程师,得到了监理工程师的确认。随后施工单位陆续上报了其他安全专项施工方案。

事件2:地下1层核心筒拆模后,发现其中一道墙体的底部有一孔洞(大小为0.30m×0.50m),监理工程师要求修补。

事件3:装修期间,在地上10层,某管道安装工独自对焊工未焊完的管道接口进行施焊,结果引燃了正下方9层用于工程的幕墙保温材料,引起火灾。所幸正在进行幕墙作业的施工人员救火及时,无人员伤亡。

事件4:幕墙施工过程中,施工人员对单元式玻璃幕墙防火构造、变形缝及墙体转角构造节点进行了隐蔽记录,监理工程师提出了质疑。

【问题】

1.工程自开工至结构施工完成,施工单位应陆续上报哪些安全专项方案(至少列出四项)?

2.事件2中,按步骤说明孔洞修补的做法。

3.指出事件3中的不妥之处。

4.事件4中,幕墙还有哪些部位需要做隐蔽记录?

4.事件4中,幕墙还有需要做隐蔽记录的部位:预埋件或后置埋件,构件连接节点,幕墙防雷装置,幕墙四周、内表面与立体结构之间的封堵,隐框玻璃幕墙玻璃板块的固定,单元式幕墙的封口节点。

答案

参考答案:

1.工程自开工至结构施工完成,施工单位应陆续上报的安全专项方案包括:供水管线防护工程;起重机安拆工程;双笼外用电梯安拆工程;起重吊装工程;悬挑卸料平台、悬挑脚手架工程;核心筒大模板工程等。

2.事件2中,孔洞修补的做法:孔洞处理需要与设计单位共同研究制定补强方案,然后按批准后的方案进行处理。将孔洞处的不密实的混凝土凿掉,要凿成斜形(外口向上),用清水冲刷干净,并保持湿润72h,然后用高一等级的微膨胀豆石混凝土浇筑、捣实后,认真养护。

3.事件3中的不妥之处:由不具备焊工上岗证的管道安装工单独完成施焊工作,焊接前没有对作业环境作了解,施焊时下方没有设置防护措施,未清理周围易燃材料。

填空题
单项选择题

College sports in the United States are a huge deal. Almost all major American universities have football, baseball, basketball and hockey programs, and (1) millions of dollars each year to sports. Most of them earn millions (2) as well, in television revenues, sponsorships. They also benefit (3) from the added publicity they get via their teams. Big-name universities (4) each other in the most popular sports. Football games at Michigan regularly (5) crowds of over 90, 000. Basketball’s national collegiate championship game is a TV (6) on a par with any other sporting event in the United States, (7) perhaps the Super Bowl itself. At any given time during fall or winter one can (8) one’s TV set and see the top athletic programs--from schools like Michigan, UCLA, Duke and Stanford-- (9) in front of packed houses and national TV audiences.

The athletes themselves are (10) and provided with sch61arships. College coaches identify (11) teenagers and then go into high schools to (12) the country’s best players to attend their universities. There are strict rules about (13) coaches can recruit--no recruiting calls after 9 p. m. , only one official visit to a campus--but they are often bent and sometimes (14) . Top college football programs (15) scholarships to 20 or 30 players each year, and those student-athletes, when they arrive (16) campus, receive free housing, tuition, meals, books, etc.

In return, the players (17) the program in their sport. Football players at top colleges (18) two hours a day, four days a week from January to April. In summer, it’s back to strength and agility training four days a week until mid-August, when camp (19) and preparation for the opening of the September-to-December season begins (20) During the season, practices last two or three hours a day from Tuesday to Friday. Saturday is game day. Mondays are an officially mandated day of rest.

4()

A. compete for

B. compete in

C. compete against

D. compete over