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所在平台: Udemy |
课程主页: https://www.udemy.com/course/using-lrfd-to-design-highway-bridge-superstructures-part-4/
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**课程名称：LRFD：公路桥梁上部结构设计（第四部分）** **课程概述：** 本课程是关于LRFD（以荷载和抗力分项系数设计法）应用于公路桥梁上部结构设计的简要介绍。课程将重点阐述LRFD的设计理念，并说明上部结构设计中使用的设计车辆荷载和车道荷载。课程将涵盖混凝土梁桥和钢桥的设计。 本系列课程旨在介绍钢结构和混凝土结构公路桥梁上部结构设计与分析的理论、方法和应用。课程内容基于AASHTO LRFD桥梁设计规范（第七版，2014年版，含2015年期间修订）。课程中的设计实例和解读旨在为桥梁工程师提供实施AASHTO LRFD桥梁设计规范的指导。 **课程内容（共八章）：** * **第一章 LRFD简介：** 概述LRFD的设计理念，并描述LRFD的各种极限状态。 * **第二章 总体设计考虑：** 提供关于场地特征和设计目标的一般信息，以及加速桥梁建设（ABC）的简要概述。 * **第三章 荷载与荷载分项系数：** 介绍常见的桥梁荷载设计标准，以及各种LRFD荷载组合中使用的荷载分项系数。 * **第四章 结构分析：** 总结结构分析的一般性内容，包括总体分析考虑、恒荷载分析、活荷载分析以及各种分析方法。 * **第五章 混凝土梁上部结构设计：** 提供混凝土梁上部结构设计的实用信息，包括初步设计决策、预应力I形梁的抗弯设计、抗剪和抗扭设计、预应力以及配筋详图。 * **第六章 钢梁上部结构设计：** 提供钢梁上部结构设计的实用信息，包括钢梁的施工、使用、疲劳和断裂、抗弯及抗剪的LRFD校核，以及各种钢结构细节的设计规定。 * **第七章 桥面板与桥面板体系：** 介绍桥面板和桥面板体系的设计，涵盖传统设计方法、经验设计方法、桥面板悬挑设计、预制桥面板以及桥面栏杆等内容。 * **第八章 支座与接缝：** 提供关于支座和接缝的一般信息，包括垫式支座和盆式支座的设计要求。 **附录：** 课程最后提供一份关于桥梁上部结构和LRFD的常用术语词汇表。
This course gives a brief introduction to LRFD application to the design of Highway Bridge Superstructures. It will shed some light on the design philosophy of LRFD. It will show the Design truck loading and lane loading used for the design of the Superstructure. It will consider both concrete girder bridges and steel bridges. This course presents the theory, methodology, and application for the design and analysis of both steel and concrete highway bridge superstructures. The manual is based on the AASHTO LRFD Bridge Design Specifications, Seventh Edition, 2014, with Interim Revisions through 2015. Design examples and commentary throughout the manual are intended to serve as a guide to aid bridge engineers with the implementation of the AASHTO LRFD Bridge Design Specifications. This course consists of eight chapters. Chapter 1 provides an introduction to LRFD, including an overview of the LRFD design philosophy and a description of the various LRFD limit states. Chapter 2 provides general information about location features and design objectives, as well as a brief overview of Accelerated Bridge Construction. Chapter 3 presents loads and load factors, including design criteria for common bridge loads, as well as load factors used for various LRFD load combinations. Chapter 4 provides a general summary of structural analysis, including general analysis considerations, dead load analysis, live load analysis, and various methods of analysis. Chapter 5 provides valuable information for the design of concrete girder superstructures, including preliminary design decisions, flexural design of prestressed I-girders, design for shear and torsion, prestressing, and reinforcement details. Similarly, Chapter 6 provides valuable information for the design of steel girder superstructures, including LRFD girder verifications for constructibility, service, fatigue and fracture, flexure, and shear, as well as design provisions for various steel superstructure details. Chapter 7 describes decks and deck systems, covering such topics as traditional design method, empirical design method, deck overhang design, precast deck slabs, and bridge railings. Chapter 8 provides general information about bearings and joints, including design requirements for elastomeric bearings and pot bearings. Finally, a glossary of common terms related to bridge superstructures and LRFD is provided.
