某高层建筑采用的满堂布桩的钢筋混凝土桩筏基础及地基的土层分布，如图14-17(Z)所示：桩为摩擦桩，桩距为4d(d为桩的直径)。由上部荷载(不包括筏板自重)产生的筏板面处相应于荷载效应准永久组合时的平均压力值为600kPa;不计其它相邻荷载的影响。筏板基础宽度B=28.8m，长度A=51.2m;群桩外缘尺寸的宽度b0=28m，长度a0=50.4m.钢筋混凝土桩有效长度取36m，即假定桩端计算平面在筏板底面向下36m处

假定桩端持力层土层厚度h1=40m，桩间土的内摩擦角φ=20°，试问，计算桩基础中点的地基变形时，其地基变形计算深度(m)应与下列何项数值最为接近?

A:33 B:37 C:40 D:44

某高层建筑采用的满堂布桩的钢筋混凝土桩筏基础及地基的土层分布，如图14-17(Z)所示：桩为摩擦桩，桩距为4d(d为桩的直径)。由上部荷载(不包括筏板自重)产生的筏板面处相应于荷载效应准永久组合时的平均压力值为600kPa;不计其它相邻荷载的影响。筏板基础宽度B=28.8m，长度A=51.2m;群桩外缘尺寸的宽度b0=28m，长度a0=50.4m.钢筋混凝土桩有效长度取36m，即假定桩端计算平面在筏板底面向下36m处

土层条件同题1。当采用实体深基础计算桩基最终沉降量时，试问，实体深基础的支承面积(m2)，应与下列何项数值最为接近?

A:1411 B:1588 C:1729 D:1945

某高层建筑采用的满堂布桩的钢筋混凝土桩筏基础及地基的土层分布，如图14-17(Z)所示：桩为摩擦桩，桩距为4d(d为桩的直径)。由上部荷载(不包括筏板自重)产生的筏板面处相应于荷载效应准永久组合时的平均压力值为600kPa;不计其它相邻荷载的影响。筏板基础宽度B=28.8m，长度A=51.2m;群桩外缘尺寸的宽度b0=28m，长度a0=50.4m.钢筋混凝土桩有效长度取36m，即假定桩端计算平面在筏板底面向下36m处

土层条件同题1，筏板厚800mm。采用实体深基础计算桩基最终沉降时，假定实体深 基础的支承面积为2000m2 。试问，桩底平面处对应于荷载效应准永久组合时的附加压力(kPa)，应与下列何项数值最为接近? 提示：采用实体深基础计算桩基础沉降时，在实体基础的埋深面积范围内，筏板、桩、土的混合重度(或称平均重度)，可近假取20kN/m3。

A:460 B:520 C:580 D:700

某高层建筑采用的满堂布桩的钢筋混凝土桩筏基础及地基的土层分布，如图14-17(Z)所示：桩为摩擦桩，桩距为4d(d为桩的直径)。由上部荷载(不包括筏板自重)产生的筏板面处相应于荷载效应准永久组合时的平均压力值为600kPa;不计其它相邻荷载的影响。筏板基础宽度B=28.8m，长度A=51.2m;群桩外缘尺寸的宽度b0=28m，长度a0=50.4m.钢筋混凝土桩有效长度取36m，即假定桩端计算平面在筏板底面向下36m处

假如桩端持力层土层厚度h1=30米，在桩底平面实体深基础的支承面积内，对应于荷载效应准永久组合时的附加压力为750kPa;且在计算变形量时，取ψs=0.2。又已知，矩形面积土层上均布荷载作用下的角点的平均附加应力系数，依次分别为：在持力层顶面处α0=0.25;在持力层底面处，α1=0.237。试问，在通过桩筏基础平面中心点竖线上，该持力层土层的最终变形量(mm)，应与下列何项数值最为接近?

A:93 B:114 C:126 D:184

图14-17桁架结构1杆轴力为（）。

A:等于0 B:拉力 C:压力 D:其他答案

Passage Three
Until two years ago, Clearing, Illinois was a tranquil suburb of Chicago. But residents grew alarmed when they noticed armed teenagers on the streets, giving gang signals and shouting at passing cars. Then came a series of burglaries and graffiti messages on store- fronts. By the time local authorities realized they had a gang problem, it was too late. Last December, two 13-year-old girls were shot outside their school as they sat in a car with two members of a local gang, the Ridgeway Lords.
Nearly all 50 states have recently passed laws that allow youths aged 14-17 to be tried in court as adults. In about 25 states they have passed laws to punish parents for their children’s behavior. And in 146 of the nation’s largest cities, they have imposed curfews to reduce juvenile violence. When you look at the spectacular rise of violent crime among young people recently, it’s easy to understand the concern. Over the past decade, there has been a decline in adult murders in the US, while murder rates have surged for youths between 14-17.
For young offenders who aren’t sent to prison, the punishments vary: some are ordered to perform community service, others are placed in job training programs, still others sent to youth prisons. But the Republicans in Congress want to reverse a basic principle of juvenile justice: the separation of young criminals from hardened adult criminals in prison. The reasons are partly financial—to reduce the cost of having separate prisons for young people—and partly psychological—to end what Republicans consider as society’s overly protective attitude towards young criminals.

A:A．In Great Britain. B:B．In Spain. C:C．In Italy. D:D．In the US

Passage Three
Until two years ago, Clearing, Illinois was a tranquil suburb of Chicago. But residents grew alarmed when they noticed armed teenagers on the streets, giving gang signals and shouting at passing cars. Then came a series of burglaries and graffiti messages on store- fronts. By the time local authorities realized they had a gang problem, it was too late. Last December, two 13-year-old girls were shot outside their school as they sat in a car with two members of a local gang, the Ridgeway Lords.
Nearly all 50 states have recently passed laws that allow youths aged 14-17 to be tried in court as adults. In about 25 states they have passed laws to punish parents for their children’s behavior. And in 146 of the nation’s largest cities, they have imposed curfews to reduce juvenile violence. When you look at the spectacular rise of violent crime among young people recently, it’s easy to understand the concern. Over the past decade, there has been a decline in adult murders in the US, while murder rates have surged for youths between 14-17.
For young offenders who aren’t sent to prison, the punishments vary: some are ordered to perform community service, others are placed in job training programs, still others sent to youth prisons. But the Republicans in Congress want to reverse a basic principle of juvenile justice: the separation of young criminals from hardened adult criminals in prison. The reasons are partly financial—to reduce the cost of having separate prisons for young people—and partly psychological—to end what Republicans consider as society’s overly protective attitude towards young criminals.

A:A policeman shot a young man. B:Criminality decreased. C:Two citizens were killed. D:Two girls were killed because they were with two members of another gan

Passage Three
Until two years ago, Clearing, Illinois was a tranquil suburb of Chicago. But residents grew alarmed when they noticed armed teenagers on the streets, giving gang signals and shouting at passing cars. Then came a series of burglaries and graffiti messages on store- fronts. By the time local authorities realized they had a gang problem, it was too late. Last December, two 13-year-old girls were shot outside their school as they sat in a car with two members of a local gang, the Ridgeway Lords.
Nearly all 50 states have recently passed laws that allow youths aged 14-17 to be tried in court as adults. In about 25 states they have passed laws to punish parents for their children’s behavior. And in 146 of the nation’s largest cities, they have imposed curfews to reduce juvenile violence. When you look at the spectacular rise of violent crime among young people recently, it’s easy to understand the concern. Over the past decade, there has been a decline in adult murders in the US, while murder rates have surged for youths between 14-17.
For young offenders who aren’t sent to prison, the punishments vary: some are ordered to perform community service, others are placed in job training programs, still others sent to youth prisons. But the Republicans in Congress want to reverse a basic principle of juvenile justice: the separation of young criminals from hardened adult criminals in prison. The reasons are partly financial—to reduce the cost of having separate prisons for young people—and partly psychological—to end what Republicans consider as society’s overly protective attitude towards young criminals.

A:the number of crimes done by young people B:the number of crimes done by adults C:the number of crimes done by school students D:the number of prisons

Passage Three Until two years ago, Clearing, Illinois was a tranquil suburb of Chicago. But residents grew alarmed when they noticed armed teenagers on the streets, giving gang signals and shouting at passing cars. Then came a series of burglaries and graffiti messages on store- fronts. By the time local authorities realized they had a gang problem, it was too late. Last December, two 13-year-old girls were shot outside their school as they sat in a car with two members of a local gang, the Ridgeway Lords. Nearly all 50 states have recently passed laws that allow youths aged 14-17 to be tried in court as adults. In about 25 states they have passed laws to punish parents for their children’s behavior. And in 146 of the nation’s largest cities, they have imposed curfews to reduce juvenile violence. When you look at the spectacular rise of violent crime among young people recently, it’s easy to understand the concern. Over the past decade, there has been a decline in adult murders in the US, while murder rates have surged for youths between 14-17. For young offenders who aren’t sent to prison, the punishments vary: some are ordered to perform community service, others are placed in job training programs, still others sent to youth prisons. But the Republicans in Congress want to reverse a basic principle of juvenile justice: the separation of young criminals from hardened adult criminals in prison. The reasons are partly financial—to reduce the cost of having separate prisons for young people—and partly psychological—to end what Republicans consider as society’s overly protective attitude towards young criminals.

A:Because taxes increased. B:Because rents were too high. C:Because gangs came into their town. D:Because the violent crime among adults is rising.

己知某山区六个乡镇C1，C2，…，C6之间的公路距离(公里数)如表14-17所示。

A:35 B:40 C:45 D:50