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一、填空:

1. 单层厂房预制柱吊装验算时,柱身自重应乘以1.5的_____动力__________系数。

2. 单层厂房排架柱内力组合时,对于吊车荷载,应遵守有_____T__________必有D的规则。

3. 直接承受重复荷载的吊车梁,其材料会因_疲劳__而降低

强度。

4. 常用的单层厂房双肢柱的型式有平腹杆式及_斜腹杆____式两种。

5. 牛腿的三种破坏形态是__弯曲____破坏、剪切破坏和混凝土局部压碎破坏。

6. 吊车荷载具有冲击和振动作用。当计算吊车梁及其连接的

强度时,吊车竖向荷载应乘以__动力___系数。

7. 单层厂房排架计算时,屋面均布活荷载不与雪荷载同时考虑,仅取两者中的较__大____值。

8. 计算柱下独立基础的底板钢筋时,地基反力采用_净力。

9. 单层厂房中,吊车横向水平荷载是小车吊有重物刹车或启动时所引起的横向水平__惯性___力。

10. 考虑多台吊车水平荷载时,对于单层厂房的每个排架,

参与组合的吊车台数不应多于____2______台。

11. 将大型屋面板直接支承在屋架或屋面梁上的屋盖体系称为___有檩________屋盖体系。

12. 单层单跨厂房考虑多台吊车水平荷载时,参与组合的吊车台数不应多于__2___台。

13. 在单层厂房排架结构中,为使柱顶产生单位水平位移而需在柱顶施加的水平力值,称为该柱的__抗剪刚度___。

14. 单层厂房中,排架与排架、排架与山墙之间相互关联的整体作用称为厂房的整体__空间______作用。

15. 单层厂房屋面活荷载包括屋面均布活荷载、雪荷载和屋面积灰荷载三种,都按屋面的__水平投影__面积计算。

16.单层厂房的支撑分为屋盖支撑和_________支撑两类。

17. 单层厂房抗风柱主要承受山墙风荷载,一般情况下其竖

向荷载只有柱自重,故设计时可近似按__________构件计算。

18.厂房预制柱吊装时,宜采用单点绑扎起吊,吊点设在______处。

19.对于超重级、重级和中级工作制吊车梁,除静力计算外,还要进行_疲劳__强度验算。

20.对于框架结构,当楼面梁的负荷面积大于25m2时,楼面__均布活_______荷载要乘以折减系数0.9。

21.筏式基础有梁板式和_________式两类。

22.吊车横向水平荷载通过大车轮在_轨顶__处传给吊车梁。

23.在单层工业厂房装配式混凝土门式刚架中,柱与基础的连

接通常为_________。

1. 框架结构的楼面梁,当其负荷面积大于25m 2时,__楼面活荷载___可考虑折减,其折减系数为0.9。

2. 在板柱结构中,柱帽的主要作用之一是扩大板在柱上的支

承面积,避免板的__冲切__破坏。

3. 多层框架结构柱下条形基础梁的_截面高度____一般宜为柱距的8

1~41。

4. 多层框架在竖向荷载作用下的近似内力计算中,假定框架_____________,同时还假定_____________。

5. 多层框架在水平荷载作用下的近似内力计算方法—D 值法,实际上是对反弯点法中_侧移刚度_和_反弯点位置__进行了修正。

6. 变形缝中的__沉降____缝应将建筑物从屋顶到基础全部分开。

7. 当框架结构梁与柱的线刚度之比超过3时,可采用__反弯点法_____法进行水平荷载作用的近似计算。

8. 计算框架结构内力时,当活荷载产生的内力远小于恒荷载及水平力所产生的内力时,可不考虑活荷载的最不利布置,但求得的框架_跨中__弯矩应乘以放大系数。

9. 框架分层法计算中,认为每一层梁上的荷载只对本层梁和

__相连的柱____产生的内力。

10. 一侧为楼梯间的中框架梁,当采用现浇楼盖时,其截面

惯性矩应取I=____1.5____I0(注:I0为矩形截面梁的截面惯性矩)。

11. 框架结构是由横梁、立柱和__________连接而成的。

12. 梁、柱和楼板均为预制,然后通过焊接拼装连接而成整体的框架结构类型为___________式框架。

13. 框架柱的反弯点高度指反弯点到该柱___________的距离。

14. 钢筋混凝土框架结构按施工方法的不同,可分为现浇式、

半现浇式、装配式和__装配整体式___四种类型。

15. 框架结构在风荷载作用下的侧移变形曲线属于____________型。

16.框架节点区的混凝土强度等级,应不_________于柱的混凝土强度等级。

17. 在钢筋混凝土框架结构中,考虑塑性内力重分布时,允许在___梁端_______出现塑性铰。

18.条形基础一方面承受上部结构传来的荷载,另一方面又受地基土_反力___的作用。

19.反弯点法假定,对于下端固定的底层柱,其反弯点位于距柱底__2/3____柱高处。

1. 对于高度50m以上或高宽比H/B大于4的框架结构,

进行侧移近似计算时,除考虑梁和柱的弯曲变形外,还应该考虑__柱轴向_____变形的影响。

2. 整体墙是指没有洞口或__洞口很小_____________的剪

力墙。

3. 在高层建筑的一个结构单元内,应尽量减小结构的侧移刚

度中心与水平荷载合力中心间的偏心,以降低_____扭转___________对房屋受力的不利影响。

4. 壁式框架柱侧移刚度D值的计算,与普通框架柱不同之处是需要考虑__刚域___和剪切变形的影响。

5. 框筒结构的柱子轴向力,愈接近筒角愈大,这种现象叫剪力滞后_________。

6. 若综合框架总剪力V f<0.2V0,则V f应取0.2V0及1.5V f,max

二者中的较___小_____者。

7. 在计算壁式框架的D值时,若不考虑剪切变形,所得D

值将比考虑剪切变形的计算值____大_____。

8. 在计算带刚域的壁式框架柱的侧移刚度D时,应考虑节

点刚域的影响和构件__剪切_____变形的影响。

9. 为避免剪力墙墙肢发生_斜压______型剪切破坏,墙肢截

面承担的剪力设计值应满足V w≤0.25βc f c b w h w0的要求。

10. 为防止连梁发生__斜压______型剪切破坏,连梁截面剪力设计值应满足V b≤0.25βc f c b b h b0的要求。

11. 壁式框架柱子的侧移刚度D的计算,要考虑刚域的影响。刚域长度越大,所得D值越___大___。

12. .框架—剪力墙结构的刚度特征值λ是反映框架和剪力

墙之间___刚度____________比值的一个参数。

13. 壁式框架的受力特点与一般框架相比,有两点不同,一

是要考虑梁柱节点处刚域的影响,二是要考虑____剪切变形___________的影响。

14. 筒中筒结构宜采用对称平面,并优先采用圆形、正多边

形。当采用矩形平面时,其长宽比不宜大于___2________。

15. 墙肢轴向压力能够__提高_________其受剪承载力。

16. 对于整体墙的水平位移计算,若采用截面的等效抗弯刚

度EI eq,则墙顶水平位移应统一地用___弯曲_______变形表达。

17. 在其它条件不变的情况下,随着连梁总转角刚度的减小,

剪力墙整体系数 将_ _减小___。

18. 当洞口比较大而且比较宽时,墙肢与连梁相比过弱,就

会产生大多数楼层的墙肢出现反弯点的情况,这种剪力墙称为___壁式框架________。

19. 剪力墙墙肢截面设计时,如墙肢为小偏心受压,还要按_

轴心受压_____构件验算平面外的承载力。

20. 框架—剪力墙结构中,横向剪力墙宜均匀地布置在建筑

物的端部附近、_平面形状____变化处及恒荷载较大的地方。

21. 小开口剪力墙墙肢承受的整体弯矩不低于总弯矩的_85___%。

22.剪力墙斜截面受剪承载力计算公式建立的依据是基于防

止_剪压_____破坏。

23.一般抗震墙底部加强部位的高度可取墙肢总高度的1/8和底部__两____层二者的较大值P282 (属结构抗震)

24. 当偏心受压的剪力墙墙肢的相对受压区高度ξ≤

ξ时,按

b __大偏心受压__构件进行设计。

25. 小开口剪力墙的墙肢承受的局部弯矩不超过总弯矩的

_15%。

26.高度超过150m的高层建筑混凝土结构应满足___舒适性

______耍求,对住宅、公寓,结构顶点最大加速度不应大于0.15m/s2。

27.考虑框架与剪力墙之间梁的转动约束作用时,框架—剪

力墙的结构体系称为__刚接_______体系。

28. 剪力滞后是__框筒_____结构的主要受力特点。

29. 建筑物处于近地风的风流场中,风速随高度而增加的规

律与地面__粗糙度______有关。

30.钢筋混凝土筒中筒结构的内筒是由_________构成的核心筒。

31.底层采用框架结构、上部采用剪力墙结构的钢筋混凝土高

层建筑结构,称为_框支________剪力墙结构。

1.单自由度弹性体系的最大加速度反应S a与该体系自振周

期T的关系曲线,称为最大加速度__反应谱曲线____。

2.抗震设计时,规则建筑的平面布置应保证平面局部突出

部分的尺寸较小,__抗侧力结构________平面分布基本均匀对称。

3.为保证抗震等级为一、二级的剪力墙墙肢塑性铰区不过

早发生剪切破坏,应使墙肢截面的受剪承载力大于其__受弯__承载力。

4. 在结构顶部附加水平地震作用ΔF n的主要原因是考虑_高振型___对结构地震反应的影响。

5. 现浇钢筋混凝土结构的抗震等级是根据设防烈度、建筑类

别、场地类别、结构类型和___建筑高度______确定的。

6.框架结构在强烈地震作用下,首先发生屈服并产生较大弹塑性位移的楼层称为结构_ 薄弱层____。

7.由于地壳构造运动使岩层断裂、错动而引起的地震,称为__构造__地震。

8.在地震区,当建筑物平面复杂、不对称并且各部分刚度、质量相差悬殊时,为减小震害可以设置__抗震_________缝。

9.钢筋混凝土结构承载力抗震调整系数γRE的数值____大于____________1。

10.《建筑抗震设计规范》规定的房屋高度是指室外地面到_

主要屋面_______的高度。

11.地震引起的结构振动,称为结构的_地震反应______。

12.抗震等级是根据设防烈度、__建筑高度____、建筑类别、结构类型及构件的重要性程度来确定的。

13.水平地震影响系数α的物理意义是动力系数与__地振系

数____的乘积。

14.在地震影响范围内,地表某处与震中的距离称为__震中

距__。

15.基本烈度每增加1度,地震系数k值增加__2倍____。

16.多遇地震烈度(小震)大约比基本烈度低___1.55_______度。

17.水平地震影响系数 的物理意义是_动力系数__与地震系数的乘积。

18. 50年内超越概率为___10﹪________的地震烈度,称为该地区的地震基本烈度。

19.竖向地震作用会在高层建筑的上部产生__拉_________应力。

20.地震波按其在地壳中传播的空间位置的不同,分为体波和_面波____。

21.在抗震设计中,增加承载力要与刚度、_延性____要求相适应。

22.单自由度弹性体系的动力系数 是指质点绝对最大加速度与___地面水平_________运动最大加速度的比值。

23.抗震设计时,竖向抗侧力构件的截面尺寸和材料强度宜自下而上逐渐减小,避免抗侧力结构的_侧向刚度___和承载力突变。

24.在抗震第一阶段设计时,按_多遇地震___作用效应和其他荷载效应的基本组合验算构件的承载力。

25.地震作用分为水平地震作用、竖向地震作用和____扭转_ 地震作用。

26.结构薄弱层指在强烈地震作用下,结构首先发生屈服并产生较大______位移的部位。

27.一般抗震墙底部加强部位的高度可取墙肢总高度的1/8和底部______层二者的较大值。

28.对于有抗震设防要求的高层建筑,平面宜简单、规则、对称,尽量减少______。

23.地震系数k的物理意义是地面水平运动最大加速度与_________的比值。

24.我国《抗震规范》规定,设防烈度8度和9度时的大跨度和_________结构及9度时的高层建筑应计算竖向地震作用。1.结构或构件承受荷载效应的能力,称为结构_抗力______________,记作R。

2.结构不能完成预定功能要求的概率,称为结构的___失

效____________概率,记作

p。

f

3. 计算长期荷载效应组合值时,活荷载应乘以____准永久

值____________系数。

4.荷载对结构产生的内力和变形,称为____荷载效应____________,用S表示。

5. 正常使用极限状态验算,应控制结构构件的变形、___

抗裂度________和裂缝宽度。

6. 结构的__可靠度_________是结构可靠性的概率度量。

7. 结构在规定的时间内,在规定的条件下,完成预定功能

的能力,称为___可靠性___。

8. 结构或构件丧失稳定(如压曲)的情况应为不满足___承载力__________极限状态。

9. 目标可靠指标[β]值是通过三个分项系数来表达的,它

们分别是材料分项系数、荷载分项系数及__结构重要性___系数。

10. R-S<0的概率,称为结构的__失效______________概率。

11. 可变荷载的代表值有标准值、组合值、准永久值和__

频遇_____值四种。

12. 以概率论为基础的极限状态设计方法是以_可靠度指

标_β来度量结构的可靠度的。

13. 结构可靠度是指结构在规定的时间内、规定的条件下、

完成

预定功能的_ 概率度量____。

14. 荷载效应是指结构或构件在荷载作用下产生的_内力、

变形、裂缝等______。

15. 结构在规定的时间内,规定的条件下,完成预定功能

的概率,称为结构的___________。

16. 荷载代表值有标准值、准永久值、频遇值及_组合值___

值。

17. 荷载可分为永久荷载、可变荷载和___偶然荷载______三类。

18. 结构或结构构件达到最大承载能力或者达到不适于继

续承载的__变形____状态,称为承载能力极限状态。

19. 结构在规定的时间内,在规定的条件下,完成预定功

能的能力,称为结构的___________。

20. 纪念性建筑和特别重要的建筑结构的__设计使用

_________年限为100年。

21. 结构功能的‘‘三性”要求指的是结构应满足安全性、适

用性及___耐久性____性的要求。

22. 结构丧失稳定属于超过____________极限状态。

23. 荷载效应S和结构抗力R都是具有各自分布规律的__

随机_______变量。

24. 与失效概率限值[p f]相对应的可靠指标称为___目标______可靠指标,记作[β]。

25.材料强度的离散性是造成结构______随机性质的主要原因。

26.材料强度的设计值等于材料强度的标准值除以______。

27.结构可靠度不会等于_________%。

28.荷载组合值ψc Q k主要用于承载能力_极限状态的基本组合中。

英语首字母填空专项练习及答案

(一) 积极Sleep is not the same every night. We experience some deep sleep and some active sleep( 睡眠), which is when dreams happen. You might think sleepwalking(梦游) would happen in active sleep, but a person isn't physically active d 86 active sleep. Sleepwalking usually happens in the first few hours of sleep in the stage called slow-wave(慢波)or deep sleep. Not all sleepwalkers a 87 walk. Some simply sit up or stand in bed or act like they're awake when, in fact, they're asleep! Most, however, do get up and move around for a few seconds or for as long as half an hour. Sleepwalkers' e 88 are open, but they don't see the same way they do when they're awake and often think they're in different rooms of the house or different places altogether. Sleepwalkers tend(往往会) to go back to bed on their own and they won't r 89 it in the morning. Doctors say sleepwalking sometimes occurs when a person is sick, has a fever, is not getting e 90 sleep, or is stressed. If sleepwalking occurs frequently, every night or so, it's a good idea for your mom or dad to take you to see your doctor. But occasional(偶然的) sleepwalking generally isn't something to worry about, a 91 " it may look funny or even scary (惊恐的) for the people who see a sleepwalker in action. It's important, of course, that the person is kept safe. Precautions(预防措施) should be t 92 so the person is less likely to fall down, run into something, or walk out the front door while sleepwalking. (二) Everyone needs sleep. In fact, all living things need sleep. Having a sound and good rest m_____86_____ us healthy. It is believed that our brain develops best during sleep. It helps all our systems work well w_____87_____ we are awake. Sleep allows our brain to reorganize all events during the day and will improve our memory development. For a student, eight to ten hours of sleep is required to give him or her e_____88_____ for the following day. A good sleep allows them to grow physically and mentally (心理上). With e_____89_____ sleep at night, students would be able to wake up early and be ready for school activities. They will be able to listen carefully in class and would have the ability to memorize the things that they learn and r_____90_____ them in the future. Eight hours of sleep makes students active t_____91_____ the whole day at school. They would be able to perform well in class, take down notes and finish their homework. When they have slept well, they can e_____92_____ understand their lessons. Good sleep prepares them well for the challenges (挑战) at school, from paperwork to sports. They will be ready to solve difficult tasks that

填空专项练习

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