楚雄街心公园人行天桥荷载试验方案.doc

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1、云南省 楚雄市 街心公园人行天桥桥梁静载试验检测方案工程名称:云南省楚雄市街心公园人行天桥桥梁荷载试验委托单位: 检测方法:桥梁荷载试验检测地点:云南省楚雄市街心公园检测日期:检测单位:楚雄市街心公园人行天桥静载试验检测方案 目录0 前言11 桥梁概况22 试验目的和依据32.1 目的32.2 依据33 桥梁静载试验方案概述43.1 试验工况43.2 主控截面43.3 横向加载方式53.4 纵向加载方式63.5 静载试验测试内容与测点布置93.5.1 挠度变形测试93.5.2 应力应变测试153.6脉动试验173.7静载试验及动力特性测试仪器设备18第20页 共22页0 前言街心公园人行天桥位

2、于楚雄市中心繁华地区两条主街道交叉口,附近有人民商场,邮电大楼,龙江旅社。同时又是东西南北的车辆及行人交汇处。全桥平面图见图0.1。图0.1 全桥平面图1 桥梁概况(1)结构形式 桥梁结构形式为连续梁桥,上部构造为钢结构箱型梁。(2)标准跨径 计算跨径:15.7m*4+7.8*2+7.3*2(3)桥面宽度 桥面宽度:净3.5m。(4)荷载等级 荷载等级:人群荷载3.5kN/。2 试验目的和依据2.1 目的现役桥梁的承载能力检测的主要技术手段是对现役桥梁进行荷载试验,桥梁荷载试验是了解桥梁性能参数、分析其实际工作状态、评定桥梁运营状况最有效、最直接的一种手段。现役桥梁结构安全性评定是以组成桥梁结

3、构的构件评定值为基础,综合考虑各类构件的重要性系数、损伤程度及其所处的环境条件后对桥梁的安全性进行评定。本次桥梁的安全性及承载力检测鉴定目的主要包括:(1) 通过对全桥进行现场外观调查及使用情况调查,全面了解桥梁的现状、服役环境状况及营运条件。(2) 基于静荷载试验和动力特性试验结果,根据有关规范、规程,对桥梁目前的整体受力性能和承载能力状况及动力特性进行综合评估,评定桥梁等级,估算桥梁剩余承载力,预测桥梁运营情况。(3) 通过桥梁安全性及承载力检测,建立桥梁技术档案,为管理部门养护管理提供技术依据。2.2 规范、标准及依据(1)公路桥涵设计通用规范(JTG D602004)(2)公路钢筋混凝

4、土及预应力混凝土桥涵设计规范(JTG D622004)(3)公路桥涵钢结构及木结构设计规范(JTG 02586)(4)公路工程质量检验评定标准 第一册 (土建工程)(JTG F80/12004)(5)公路养护技术规范(JTG H102009)(6)公路桥涵养护规范(JTG H112004)(7)公路技术状况评定标准(JTG H202007)(8)公路桥涵技术状况评定标准(JTG/T H212011)(9)公路桥梁承载能力检测评定规程(JTG/T J212011)(10)城市桥梁设计准则(CJJ112011)(11)工程测量规范(GB 500262007)(12)城市人行天桥与人行地道技术规范(

5、CJJ 89-95) 3 桥梁静载试验方案概述按照内力等效的原则,应使试验荷载作用下结构的内力与设计荷载作用下结构的内力相等或接近。测试试验荷载作用下各控制截面的应变(应力)和挠度,并将测试结果与计算结果进行比较分析。3.1 试验工况为了满足桥梁承载力的检测要求,共选择了反映桥梁结构最不利的4个试验荷载工况,分别为(具体布载及试验实施方案后续细化):工况1:试验跨E-H(I-I截面)最大正弯矩偏载(外侧加载)加载试验,采用砂袋堆载,在本方案加载区域内按3.8kN/m2加载;工况2:试验跨E-H(I-I截面)最大正弯矩满载加载试验,采用砂袋堆载,在本方案加载区域内按3.8kN/m2加载;工况3:

6、试验跨A-D(I-I截面)最大正弯矩满载加载试验,采用砂袋堆载,在本方案加载区域内按3.8kN/m2加载。工况4:试验跨A-D(I-I截面)最大正弯矩满载加载试验,采用砂袋堆载,在本方案加载区域内按3.8kN/m2加载。3.2 主控截面测试桥梁弯矩、挠度的主控截面确定为桥梁的试验跨A-H跨中(I-I截面)、L/4跨(II-II截面),支座根部(III-III截面),截面位置见图3.1。图3.1 桥梁主梁主要控制截面3.3 横向加载方式各工况下,试验荷载的横桥向偏载布置见图3.2,试验荷载的横桥向满载布置见图3.3。图3.2 试验荷载横向偏载布置示意图图3.3 试验荷载横向满载布置示意图3.4

7、纵向加载方式工况1:试验跨E、F、G、H(I-I截面)最大正弯矩偏载(外侧加载)加载试验纵向加载方式见图3.4;工况2:试验跨E、F、G、H(I-I截面)最大正弯矩满载加载试验纵向加载方式见图3.5;工况3:试验跨A、B、C、D(I-I截面)最大正弯矩偏载(外侧加载)加载试验纵向加载方式见图3.6;工况4:试验跨A、B、C、D(I-I截面)最大正弯矩满载加载试验纵向加载方式见图3.7;图3.4 工况1纵向加载方式图3.5 工况2纵向加载方式图3.6 工况3纵向加载方式图3.7 工况4纵向加载方式3.5 静载试验测试内容与测点布置3.5.1 挠度变形测试挠度检测方法为:在桥面对应位移测点处布设挠

8、度变形测点,采用高精度水准仪测试各个工况下的挠度变形,同一测试截面布置三个挠度测点,全桥总共72个位移测点。挠度测点布置在桥面上,见图3.8。A-I-I截面挠度测点布置示意图A-II-II截面挠度测点布置示意图A-III-III截面挠度测点布置示意图B-I-I截面挠度测点布置示意图B-II-II截面挠度测点布置示意图B-III-III截面挠度测点布置示意图C-I-I截面挠度测点布置示意图C-II-II截面挠度测点布置示意图C-III-III截面挠度测点布置示意图D-I-I截面挠度测点布置示意图D-II-II截面挠度测点布置示意图D-III-III截面挠度测点布置示意图E-I-I截面挠度测点布置

9、示意图E-II-II截面挠度测点布置示意图E-III-III截面挠度测点布置示意图F-I-I截面挠度测点布置示意图F-II-II截面挠度测点布置示意图F-III-III截面挠度测点布置示意图G-I-I截面挠度测点布置示意图G-II-II截面挠度测点布置示意图G-III-III截面挠度测点布置示意图H-I-I截面挠度测点布置示意图H-II-II截面挠度测点布置示意图H-III-III截面挠度测点布置示意图挠度测点布置如见图3.8 3.5.2 应力应变测试在各测试截面安装应变计,采用静态应变测试系统进行测试,主要测试控制截面的应变分布规律和整体受力性能。本次静载试验中的应变测点布置如图3.9所示。

10、A- I-I截面应变测点布置示意图B- I-I截面应变测点布置示意图C- I-I截面应变测点布置示意图D- I-I截面应变测点布置示意图E- I-I截面应变测点布置示意图F- I-I截面应变测点布置示意图G- I-I截面应变测点布置示意图H- I-I截面应变测点布置示意图应变测点布置如图3.9所示3.6脉动试验桥梁结构的自振特性(各阶振动频率、对应的振型、阻尼比等)是桥梁的一种固有特性,与桥梁的跨径、结构形式、建桥材料等有关。桥梁结构的自振特性通过脉动试验获得。脉动试验加速度振动测试测点布置在桥面上,测试桥面每个测点的振动加速度时程,每测试跨的脉动试验振动测点布置见图4.0。脉动试验振动测点布

11、置图4.03.7静载试验及动力特性测试仪器设备 (1) 应变量测采用应变计,数据采集采用DH3815N静态应变测试仪进行测试。(2) 挠度测试布置挠度变形测点,测试仪器主要采用ZDL700系列数字水准仪。图3.9 ZDL700 系列数字水准仪(3)动力特性测试采用DH610V加速度传感器,采用DH5922多通道动态信号采集分析系统进行数据的采集。图3.12 DH5922动态信号测试分析系统图3.13 DH3815N静态信号测试分析系统精品文档 精品文档 精品资料 精品文档- 精品资料9JWKffwvG#tYM*Jg&6a*CZ7H$dq8KqqfHVZFedswSyXTy#&QA9wkxFye

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24、T#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849Gx

25、Gjqv$U*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89A

26、mYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNuGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcU

27、E%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ks

28、v*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqvadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxG

29、jqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY

30、7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89Amv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!

31、zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz84!z89Amv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#K

32、N&MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89AmYWpazadNu#K

33、N&MuWFA5uxY7JnD6YWRrWwcvR9&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%MadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE

34、9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*adNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&q

35、YpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK

36、!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89Amv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9w

37、EwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz84!z89Amv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9w

38、EwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWR

39、rWwcvR9&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz8

40、49GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNuGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!

41、z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#Q

42、cUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9C

43、pbK!zn%Mz849GxGjqv$U*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89Amv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv

44、*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$U*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%MzadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxGjqv$UE9wEwZ

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