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北京财富中心大体积砼施工方案简介：

北京财富中心的大体积混凝土施工方案通常会是一个精细且复杂的工程，主要包括以下几个关键步骤：

1. 前期规划：首先，会对整个建筑的结构进行详细的分析，考虑大体积混凝土的温度控制、收缩控制以及结构稳定性等因素，制定出施工的整体计划。

2. 材料选择：选择高强度、低水化热的特种混凝土，以减少温度变化造成的裂缝。可能还需要添加膨胀剂来抵消混凝土收缩。

3. 模板设计：采用高质量的模板，确保浇筑的混凝土表面平整，减少收缩裂缝。可能还会使用分块浇筑、跳仓法等方法，以减小施工荷载。

4. 温度控制：大体积混凝土施工中，温度控制非常重要。通常会采用保温措施，如覆盖保温材料，或者在冬季施工时增加加热设备，以避免混凝土因温度变化过大而产生裂缝。

5. 施工过程监控：在整个施工过程中，会进行实时的温度和湿度监测，以及混凝土的强度测试，确保施工质量和安全。

6. 养护与裂缝处理：浇筑完成后，进行适当的养护，保证混凝土的强度增长。如有必要，会采取裂缝修补措施，以防止裂缝扩大。

7. 后期监测：施工结束后，还需要进行长期的结构健康监测，以确保建筑的长期稳定性。

这只是一个基本的概述，具体的施工方案会根据财富中心的结构特点、工程要求以及当地环境条件等因素进行定制。

北京财富中心大体积砼施工方案部分内容预览：

1.4主要标准··························································2

1.5主要标准图集······················································2

98S205 消防增压稳压设备选用与安装（隔膜式气压罐） 1.6其他······························································2

工程简介····························································3

2.1工程位置及周边环境················································3

2.2设计简介··························································3

2.3重点与难点························································5

施工安排····························································6

3.1施工计划安排······················································6

3.2成立协调指挥中心··················································6

3.3选择商品混凝土搅拌站··············································6

3.4混凝土浇筑顺序····················································6

3.5混凝土输送方式····················································6

3.6现场车辆行驶道路安排··············································6

施工准备····························································8

4.1技术准备··························································8

4.2现场准备··························································8

4.3搅拌站组织管理····················································14

混凝土计量搅拌和运输················································21

5.1混凝土计量························································21

5.2混凝土搅拌························································21

5.3混凝土运输························································21

混凝土浇筑、收面抹压和养护··········································22

6.1混凝土浇筑························································22

6.2混凝土收面抹压····················································28

6.3混凝土养护························································28

底板混凝土测温······················································29

7.1主楼底板测温点布置················································29

7.2车库地板测温点的布置··············································32

7.3传感器固定························································33

7.4配置计算机软件参数················································33

7.5底板混凝土养护测温················································33

底板混凝土工程试验··················································34

8.1现场混凝土标养室··················································34

8.2安排专职试验员····················································34

8.3混凝土坍落度测试··················································34

8.4混凝土试块留置、取样、养护········································34

质量保证措施························································35

9.1质量管理机构······················································35

9.2确保工程质量的管理措施············································35

9.3混凝土表面外观检查················································37

9.4混凝土的进场检验··················································37

安全措施····························································38

2.1工程位置及周边环境

北京财富中心写字楼工程，位于朝阳区东三环北路23号，地处CBD（中央商务区）核心区，与中央电视台新址隔路相望，东临东三环，北侧为朝阳路，南侧是光华路，车流量大，交通十分拥堵。

2.3.1混凝土施工工艺制定

制定科学、合理的施工方案和浇注工艺并严格执行，是保证大体积混凝土施工质量的关键。砼原材料的选择和施工配合比的确定必须通过实验和专家论证；砼的浇筑方式采用“分段定点、一个坡度、薄层浇筑、循序推进、一次到顶”的方法；采用二次振捣工艺，以提高砼的密实性和抗拉强度；实行二次抹压，对大面积的砼面要进行拍打振实，去除浮浆，增强砼表面的抗裂能力。最终确保混凝土的浇筑质量，是本工程的重点。

施工现场场地狭小，机械布置困难，地处闹市区，交通拥堵，气温高，如何科学组织有效协调，是整个底板浇筑过程有序进行，是本工程的难点。

2.3.3混凝土方量大

底板（C40P10）混凝土总量为16290m3。其中主楼底板13000m3，裙房底板3290m3。

2.3.4降低绝热升温

写字楼工程底板厚度大，底板砼浇筑时间在8月，气温高，优化混凝土配合比，合理选用低水化热的胶凝材料，控制好原材料的质量和使用温度，尤其是水、水泥、砂、石的温度，使之处于较低的温度状态，从而达到降低砼入模温度和降低砼绝热升温的目的，是本工程的重点。

2.3.5做好砼保温、保湿养护工作，防止有害裂缝的产生

底板大体积混凝土浇筑后，为了减少升温阶段内外温差，控制降温阶段的温度速率，防止混凝土产生裂缝，做好混凝土测温和混凝土的保温养护、潮湿养护十分重要。

采用砼自动测温技术，适时掌握砼的温度变化情况。定性、定量的指导施工，从而采取重要的养护方法以控制砼的里表温度小于25℃、控制降温速率小于20℃/d，以防止混凝土早期和中期裂缝的出现；在潮湿条件下可是谁你顺利进行水化，提高砼的极限拉伸值，防止砼表面脱水产生干缩裂缝，还可以使砼的水化热降温速率延缓，减少结构内外温差，防止产生温度裂缝，是本工程的重点。

2.3.6泌水和浮浆的处理

大流动性砼在浇筑、振捣过程中，产生的泌水和浮浆较多，必须用真空吸水泵及时排除基坑，以保证砼的浇筑质量，

本工程底板砼浇筑时间安排：主楼底板砼施工计划于2010年9月3日晚开始GB∕T 31454-2015 公路收费车道图像抓拍与处理，9月6日上午结束。车库底板砼计划于XX年XX月进行（具体时间另行安排）

3.2成立协调指挥中心

由于底板混凝土施工正值夏天，气温高，雨水多，困难多；为确保底板大体积混凝土的顺利进行，工地成立以项目经理为总指挥的协调指挥中心，项目经理部、劳务队、搅拌站相关人员参加，全面协调指挥混凝土施工的各个方面。

3.3选择商品混凝土搅拌站

本工程全部采用商品混凝土。总包、甲方、监理共同供考察，选择一家实力雄厚、具有同类工程施工经验的搅拌站作为混凝土供应方。为预防特殊情况发生，另选一家备用搅拌站。

《工作场所有害因素职业接触限值 第1部分：化学有害因素 GBZ2.1-2007》底板混凝土浇筑顺序总体上按照由北向南的方向推进。

施工现场混凝土输送方式采用以下三种：