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墩柱施工技术交底.doc

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墩柱施工技术交底
一、材料
采用商品砼。钢筋采用ⅠⅡ级钢筋,要有出厂合格证和出厂检验报告。并应按规定取样检验。
二、操作工艺
1、测量放样,修凿接头砼,搭设脚手架。
2、钢筋制作:制作在钢筋棚加工好,运到现场安装。主筋绑好后,再按设计要求将箍筋点焊于主筋四周。主筋采用“套筒冷挤压连接技术”,应符合《带肋钢筋套筒挤压连接技术规程》(JCJ108)的规定。钢筋骨架要保证垂直度,并在骨架外侧挂水泥砂浆保护层垫块。
3、模板安装
墩柱模板采用定型钢模板,由两个半圆形钢模用ф20螺栓连接拼装而成,每节长1.5m ,要求设调节段,长0.5m。模板应先试拼检查,调整其拼缝。模板要涂脱模剂,安装要保证不漏浆,从顶端向四个方向引出四条风缆绳,以便调整偏位,垂直度和固定模板。
4、砼浇筑
C30商品砼通过输送泵经导管借助串筒运送砼入模,按每层浇筑厚度30cm ,分层浇筑分层振捣密实,砼坍落度控制在120mm ~140mm 内,插入式振捣器振捣密实。拆模后及时淋水养护不少于设计或规范要求。
商品砼运输。当砼拌和物运距较近时,可采用
Pier Construction Technology Details
One, materials
By Shangpin Tong. Ⅰ Ⅱ grade reinforced with steel bars, to have the factory certificate and factory inspection reports. And should be required to sample test.
Second, the operation process
1, measurement and sampling, concrete joint repair hammer, scaffold erection.
2, steel production: production of steel shed in the process is good, transported to the site installation. After the reinforcement, tied up, and then design around the hoop welded to longitudinal bars. The reinforcement, a "cold extrusion sleeve connection technology" should be consistent with "Ribbed sleeve compression connection technology point of order" (JCJ108) requirements. Steel frame to ensure verticality of the outside skeleton hanging in the protective layer of cement mortar pads.
3, template installation
Steel Pier template using the template set by the two semi-circular steel bolt assembly with ф20 made, each section length 1.5m, required adjustment section based, long 0.5m. Template should try spell check, adjust its patchwork. Template to mold release coating, plasma installation to ensure no leakage from the top to the four winds four directions lead to cable in order to adjust the deviation, the vertical degree and a fixed template.
4 Pouring
C30 Shangpin Tong pump catheter through the tube with delivery of concrete into the mold string, pouring each layer thickness by 30cm, hierarchical placement layered vibration compacting, concrete slump controlled 120mm ~ 140mm, the plug-in vibrators vibrators dense. Timely watering after form removal or conservation of not less than the design specifications.
Shang Pintong transport. When the concrete mixture closer distance, we can use
 

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