墩柱施工技術交底.doc

墩柱施工技術交底
一、材料
采用商品砼。鋼筋采用ⅠⅡ級鋼筋，要有出廠合格證和出廠檢驗報告。并應按規定取樣檢驗。
二、操作工藝
1、測量放樣，修鑿接頭砼，搭設腳手架。
2、鋼筋制作：制作在鋼筋棚加工好，運到現場安裝。主筋綁好后，再按設計要求將箍筋點焊于主筋四周。主筋采用“套筒冷擠壓連接技術”，應符合《帶肋鋼筋套筒擠壓連接技術規程》（JCJ108）的規定。鋼筋骨架要保證垂直度，并在骨架外側掛水泥砂漿保護層墊塊。
3、模板安裝
墩柱模板采用定型鋼模板，由兩個半圓形鋼模用ф20螺栓連接拼裝而成，每節長1.5m ，要求設調節段，長0.5m。模板應先試拼檢查，調整其拼縫。模板要涂脫模劑，安裝要保證不漏漿，從頂端向四個方向引出四條風纜繩，以便調整偏位，垂直度和固定模板。
4、砼澆筑
C30商品砼通過輸送泵經導管借助串筒運送砼入模，按每層澆筑厚度30cm ，分層澆筑分層振搗密實，砼坍落度控制在120mm ～140mm 內，插入式振搗器振搗密實。拆模后及時淋水養護不少于設計或規范要求。
商品砼運輸。當砼拌和物運距較近時，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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