3.1 梁、的一般构造板 3.2 受弯构件证截面的受弯性能 3.3 正截面受弯承载力计算原理 3.4 单筋矩形截面受弯正截面承载力计算 3.5 双筋矩形截面受弯正截面承载力计算 3.6 T形截面受弯正截面承载力计算

本章基本要求 一、掌握轴心受压构件的受力特点及承载力计算方法。重点掌握普通配箍构件轴心受压构件的计算;理解配置螺旋箍筋轴压构件承载力提高的原理。 二、掌握偏心受压构件的受力特性;两类偏压构件的特点与判别;受压构件纵向弯曲的影响。 三、掌握矩形截面非对称和对称偏心受压构件的正截面承载力的计算公式、适用条件及公式应用。 四、一般掌握I形截面对称配筋偏压构件的承载力计算。 五、了解截面承载力N与M的关系。 六、掌握受压构件的构造要求

现代飞机对机场道面的要求是不仅应有足够的强度，而且还必需具有满足飞机高速滑跑 的通行性有，即跑道道面应有合适的粗糙度(抗滑性)和良好的平整度。跑道道面只有同时满 足强度、粗糙度和平整度三方面技术指标的要求，才能保障现代飞机的起飞、降落时的安全、 舒适，才能延长飞机和道面的使用寿命。一个完整的机场道面设计应包括上述三个方面的设 计内容，本间将地机场道面表面的粗糙度和平整度进行讨论

1、钢结构对材料的要求 （1） 较高的抗拉强度fu和屈服点fy （2） 塑性、冲击韧性好 （3） 冷加工性能好 （4） 可焊性好 （5） 耐久性好

本章主要介绍轴向荷载作用在构件截面重心时,构件的破 坏特征及强度计算、构造要求,并对螺旋箍筋构件的核心混 凝土强度分析及强度计算作详细介绍

第一节纯扭构件 5.1.1矩形截面纯扭构件的开裂扭矩 弹性材料(P92,5-5a):Tmax=2,(3.03≤≤4.79) 塑性材料:Tmaxyy2,(2.0≤y1≤3.0)

轴心受拉构件从加载到破坏,其受力过程分 为三个阶段:从加载到砼受拉开裂前,砼开裂后 到钢筋即将屈服,受拉钢筋开始屈服到全部受拉 钢筋达到屈服。 轴心受拉破坏时混凝土裂缝贯通,纵向拉钢筋达 到其受拉屈服强度,正截面承载力公式如下:

Computation of Stress, Crack width and Reflection of RC Flexural Members  Characteristics of use of reinforced concrete beam during the calculation.  The concept of transformed section and the geometric characteristics.  The stress state of reinforced concrete short-term checking.  Flexural members of the cracks and the maximum width of crack.  Deformation of flexural members.  Durability of concrete structures

bias components are the mechanical characteristics of cross sections and two failure modes, Boundaries and determine the size of bias conditions; Familiar with eccentric compression of the second-order effect and calculation; Eccentric rectangular cross-section bearing capacity of compression members is calculated, Including the formula, the formula of the applicable conditions of reinforcement and non-symmetrical Design and reinforcement of the cross-section symmetrical cross section for review; I-shaped, T shaped eccentric compression AND CIVIL ENGINEERING Calculation method; Circular section eccentric compression member cross section design and review; Eccentric compression reinforcement of the structure and reasonable layout requirements

With a longitudinal axis of steel stirrups and the general failure mode of compression members, bearing capacity; Longitudinal and spiral reinforcement with stirrups failure modes of axial The concept of stability factor and its influencing factors; Analysis of the core concrete strength and strength calculation; Ordinary hoops column, spiral column reinforcement stirrup features and construction requirements