ImageVerifierCode 换一换
格式:PDF , 页数:1 ,大小:85.20KB ,
资源ID:417562      下载积分:2000 积分
快捷下载
登录下载
邮箱/手机:
温馨提示:
如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
如填写123,账号就是123,密码也是123。
特别说明:
请自助下载,系统不会自动发送文件的哦; 如果您已付费,想二次下载,请登录后访问:我的下载记录
支付方式: 支付宝扫码支付 微信扫码支付   
注意:如需开发票,请勿充值!
验证码:   换一换

加入VIP,免费下载
 

温馨提示:由于个人手机设置不同,如果发现不能下载,请复制以下地址【http://www.mydoc123.com/d-417562.html】到电脑端继续下载(重复下载不扣费)。

已注册用户请登录:
账号:
密码:
验证码:   换一换
  忘记密码?
三方登录: 微信登录  

下载须知

1: 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。
2: 试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。
3: 文件的所有权益归上传用户所有。
4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
5. 本站仅提供交流平台,并不能对任何下载内容负责。
6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。

版权提示 | 免责声明

本文(AASHTO HB-17 DIVISION I SEC 6-2002 Division I Design - Culverts《涵洞》.pdf)为本站会员(lawfemale396)主动上传,麦多课文库仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文库(发送邮件至master@mydoc123.com或直接QQ联系客服),我们立即给予删除!

AASHTO HB-17 DIVISION I SEC 6-2002 Division I Design - Culverts《涵洞》.pdf

1、Section 6 CULVERTS 6.1 CULVERT LOCATION, LENGTH, AND WATERWAY OPENINGS Recommendations on culvert location, length, and waterway openings are given in the AASHTO Guide on Hydraulic Design of Culverts. 6.2 DEAD LOADS Vertical and horizontal earth pressures on culverts may be computed by recognized or

2、 appropriately documented analytical techniques based on the principles of soil me- chanics and soil structure interaction, or design pressures shall be calculated as being the result of an equivalent fluid weight as follows. 6.2.1 Culvert in trench, or culvert untrenched on yielding foundation A. R

3、igid culverts except reinforced concrete boxes: (1) For vertical earth pressure- 120 pcf For lateral earth pressure- 30 pcf (2) For vertical earth pressure-120 pcf For lateral earth pressure- 120 pcf (1) For vertical earth pressure-120 pcf For lateral earth pressure- 30 pcf (2) For vertical earth pr

4、essure-120 pcf For lateral earth pressure- 60 pcf For vertical earth pressure- 120 pcf For lateral earth pressure- 120 pcf B. Reinforced concrete boxes: C. Flexible Culverts: When concrete pipe culverts are designed by the Indirect Design Method of Article 16.4.5, the design lateral earth pressure s

5、hall be determined using the procedures given in Article 16.4.5.2.1 for embankment installations and in Article 16.4.5.2.2 for trench installations. 6.2.2 Culvert untrenched on unyielding foundation A special analysis is required. 6.3 FOOTINGS Footings for culverts shall be carried to an elevation s

6、ufficient to secure a firm foundation, or a heavy rein- forced floor shall be used to distribute the pressure over the entire horizontal area of the structure. In any location subject to erosion, aprons or cutoff walls shall be used at both ends of the culvert and, where necessary, the entire floor

7、area between the wing walls shall be paved. Baffle walls or struts across the unpaved bottom of a culvert bar- rel shall not be used where the stream bed is subject to ero- sion. When conditions require, culvert footings shall be reinforced longitudinally. 6.4 DISTRIBUTION OF WHEEL LOADS THROUGH EAR

8、TH FILLS 6.4.1 When the depth of fill is 2 feet or more, concen- trated loads shall be considered as uniformly distributed over a square with sides equal to 1% times the depth of fill. 6.4.2 When such areas from several concentrations over- lap, the total load shall be uniformly distributed over the

9、 area defined by the outside limits of the individual areas, but the total width of distribution shall not exceed the total width of the supporting slab. For single spans, the effect of live load may be neglected when the depth of fill is more than 8 feet and exceeds the span length; for multiple sp

10、ans it may be neglected when the depth of fill exceeds the dis- tance between faces of end supports or abutments. When the depth of fill is less than 2 feet the wheel load shall be distributed as in slabs with concentrated loads. When the calculated live load and impact moment in concrete slabs, bas

11、ed on the distribution of the wheel load through earth fills, exceeds the live load and impact moment calculated according to Article 3.24, the latter moment shall be used. 6.5 DISTRIBUTION REINFORCEMENT Where the depth of fill exceeds 2 feet, reinforcement to provide for the lateral distribution of concentrated loads is not required. 6.6 DESIGN For culvert design guidelines, see Section 16. 181

copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
备案/许可证编号:苏ICP备17064731号-1