電廠主要施工方案及重大技術措施.doc

第一章 主要施工方案及重大技術措施
第一節 土建
1  方格網布設及沉降觀測方案
1.1 方格網布置：
根據廠區總平面布置圖、廠區地下設施布置圖和施工總平面布置圖，確定平面及高程控制樁的布設圖。布設原則遵循從高級到低級、從整體到局部的原則。要求相鄰點通視良好，視線離開障礙物一定距離，并便于擴展和加密。定出主廠房的主軸線，根據這些主軸線建立主廠房軸線控制網。高程控制網分兩級，首先沿廠區方格網點布設二等水準網，作為整個施工場地的高程控制網，然后根據廠區高程控制網布設主房高程控制點。布設時還要考慮新老廠房的連接，并測出#1、#2機廠房相關數據，供施工時加以調整，以保證新老廠房平面和豎向的一致性和連接精度。
1.2 方格網樁位埋設：
樁的形式為400×400現澆鋼筋混凝土樁，樁位埋設深度80cm，樁頂埋設200×200的不銹鋼標志板，上焊φ10不銹鋼半球，樁位埋設完畢后四周用腳手管圍欄加以保護。
1.3 儀器：
方格網采用瑞士雷卡TC—1800（2mm+2ppm，1.5"）智能型全站儀(此儀器是我公司唯一擁有目前國內施工單位最先進的儀器)進行測設，測設精度為邊長ms≤s/40000，測角精度mβ≤±⒉5″。高程控制網的測設采用德國FG005A精密水準儀配銦瓦水準尺按二等水準測量規范實施，平差后的
The first chapter is a major construction program and technical measures
Civil Section
A square grid layout and settlement observation program
1.1 Grid layout:
According to plant general layout plans, plant layout and construction of underground facilities, the general layout plan to determine the Horizontal and Vertical Control pile layout plan. Follow the principles laid from high to low, from whole to parts and principles. Adjacent points, as requested through a good sight distance from obstacles, and facilitate expansion and encryption. Set the main building's main axis, according to the axis of the main axis of the establishment of the main plant control network. Elevation control network at two levels, first of all network laid along the second level of the box factory network, as the construction site of the control network, and plant height control network according to the main room elevation control points. Layout must be considered when connecting the old and new plants and measured # 1, # 2 machine factory data for the construction to be adjusted to ensure that new and old plant flat and vertical accuracy of the consistency and connectivity.
1.2 Grid Pile laying:
Pile in the form of 400 × 400 cast reinforced concrete piles, Pile laying depth 80cm, 200 × 200 laid pile top stainless steel logo plate, the welding of stainless steel hemisphere φ10, Pile laying around after the hand-foot pipe fence to protect them.
1.3 Instrument:
Grid using Ruishileika TC-1800 (2mm +2 ppm, 1.5 ") Intelligent Total Station (This instrument is the sole owner of the company's most advanced domestic equipment construction unit) to survey and design, test set accuracy of edge long ms ≤ s/40000, angular accuracy mβ ≤ ± ⒉ 5 ". Elevation control networks established by the German FG005A with indium-watt standard of precision leveling feet standard implemented by second-class standard of measurement, after adjustment
 

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