问题 问答题

某机电安装施工单位承建一地下动力中心安装工程,建筑物为现浇钢筋混凝土结构,并已施工完成。预埋的照明电线管和其他预埋工作经检查无遗漏。

地下建筑物的平面及剖面简图。

设备布置和设计要求是:

①-2.600层Ⅰ区安装冷却塔及其水池;②-6.800层Ⅰ区安装燃油供热锅炉、Ⅱ区北侧安装换热器,南侧安装各类水泵;③-11.800层Ⅰ区为变配电所、Ⅱ区北侧安装离心冷水机组,南侧安装柴油发电机组;④动力中心设有通风排气和照明系统,在-11.800层地面下有集水坑,各层吊装孔在设备吊装结束后加盖,达到楼面强度,并做防渗漏措施;⑤每种设备均有多台,设备布置紧凑,周界通道有限。

安装开工时,工程设备均已到达现场仓库。所有工程设备均需用站位于吊装孔边临时道路的汽车吊(40t),吊运至设备所在平面层,经水平拖运才能就位。

问题

动力中心安装前要做起重吊装作业的专项安全技术交底,交底内容哪些与土建工程有关并说明理由。

答案

参考答案:

有汽车吊站位的地面承载力试验、大型设备拖运路经楼面承载力核算、墙体上拖运用预埋锚点的强度计算。因为汽车吊站在经大开挖回填后的路面上,楼面或锚点的使用必须经设计单位书面认定。

单项选择题 案例分析题
阅读理解

Many Chinese have been greatly shocked by the traffic accident caused by the drunk driver Sun Weiming, who has killed five and injured some others in Chengdu, Sichuan. However, such a case is not rare.

Today, the traffic accidents may have been regarded as a social problem. The car has killed and disabled more people in its brief history than any bomb or weapon ever invented. Much of the blood on the street flows actually from rude behavior of drivers who refuse to respect the legal and moral(道德的) rights of others. In fact, the enemies of society on wheels are rather harmless but just ordinary people acting carelessly, you might say. But it is a principle both of law and common morality that carelessness is no excuse when one's actions could bring death or damage to others. A minority of the killers go even far beyond carelessness that can be imagined.

Researchers have estimated that as many as 80 percent of all automobile accidents can be attributed to(归属于) the psychological condition of the driver. Emotional upsets can change drivers' reactions incorrectly, slow their judgment, and make them blind to the dangers that might otherwise be obvious. The experts warn that it is important for every driver to make a conscious effort to keep his/her emotions under control.

Yet the irresponsibility that accounts for much of the problem isn't only put upon drivers. Street walkers regularly ignore or break traffic regulations. They are blamed in most vehicle walker accidents, and many cyclists even believe that they are not subject(受…支配) to the basic rules of the road.

Significant legal advances have been made towards safer driving in the past few years. Safety standards for vehicles have been raised both at the point of manufacture and through regular road inspections. In addition, speed limits have been lowered. Due to these measures, the accident rate has decreased. But the accident experts still worry because there has been little or no improvement in the way drivers behave. The only real and lasting solution, say the experts, is to make people believe that driving is a skilled task requiring constant care and concentration. Those who fail to do all these things present a threat to those with whom they share the road.

小题1:Traffic accidents may be regarded as a social problem because          .

A.auto driving has become dangerous and harmful in today's society

B.people usually pay no attention to law and morality when driving

C.they have caused serious psychological problems among drivers

D.the car has killed and disabled more people than any weapon in history小题2:Who are NOT mentioned as being responsible for the road accidents?

A.Careless bicycle-riders.

B.Careless people walking in the street.

C.Irresponsible auto drivers.

D.Irresponsible auto manufacturers.小题3:Discussing solutions to traffic accidents, the author seems to be          .

A.doubtful and hopeless

B.angry and disappointed

C.objective (客观的) and concerned

D.anxious and annoyed