aq45m层鱼腹式大梁的高支模专项施工方案27.doc
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1、the building of grassroots organizations of the party has in place comprehensive and excellent decision, unbalanced development of grass-roots party organizations in schools, fully equipped with strong party branch secretaries, standardized branch of the construction, the party controls the party, s
2、trictly administering the party system deficiencies. Although outdated, lack of specificity, seriousness and restraint system regulations for patch perfect, but failed to form a system, and construction of inner-party regulations needed to further enhance scientific and systematization and standardi
3、zation level. 6, in the implementation of a gang two sittings, to be honest and work the same layout, but sometimes there is too much emphasis on important issues, and one-sided pursuit of tasks implementation issues. (V) space cleanup, housing car description and salary transfers and other aspects
4、of the relationship between school adjustment cleaning office spaces 6326 sqm 143, vacated office room, to repel illegal standard with 5 cars. At present, school leaders and official cars were within the Office space standards. Not illegal part-time wage and transfer related to members of the leadin
5、g group and individual family housing also has personal issues to report truthfully. All school leaders had no full-time Secretary. Second, the analysis of the cause of the problem (a) ideal beliefs are weakened, as transactional work, learning time arrangements are insufficient, received insufficie
6、nt education of ideal and belief. Meanwhile, from the effects of invasion and the thought of social reality, fluctuations, combined with the lack of theoretical learning and mastery, weakened somewhat to communist ideals and beliefs. Ideal and faith is the root of party members and cadres, pulse of
7、country, soul, has no roots, no pulse, no soul, it will be a big problem. Second, weakening of spiritual pursuit, as not enough energy. Society in General light work light ideal demands, interests and belief choices the influence, eroded our spiritual pursuits, relaxing our self, team loyalty, aware
8、ness, situation awareness, professionalism has weakened, as inadequate. (B) the party spirit has . , Practice area, peoples achievement in perspective, time correction performance oriented, unable to stick to seeking truth from facts, scientific attitudes, pragmatic style, and interests of the peopl
9、e as the starting point and the end point for all the work, establish stand the test of practice, history, and the peoples performance. Third, to benefit, the ability to resist temptation. Not always adhere to the party and the peoples interests above everything else. Personal interests conflict wit
10、h the interests of the party and the people, when fear of sacrifice. On the relationship of give and take, not completely content to the poor and selfless dedication; on dealing with rights and obligations cannot be self-disciplined and law-abiding. In General, there are many reasons, both issues no
11、t strict with themselves, there is vulnerability, external constraint is not strong because of institutional mechanisms. But read between the lines, or personal ideals and beliefs on the root causes landslides, professionalism, responsibility is not strong, four winds problem rectification is not co
12、mplete, no real issues of world Outlook, Outlook on life and Outlook on the master switch problem. All not false questions, if you do not attach great importance to solve, great harm. Part provincial University leaders disciplinary illegal case lessons told we, on personal, self 45m鱼腹式大梁的专项施工方案 深圳市会
13、议展览中心工程45m层鱼腹式大梁的专项施工方案 江苏华建建设股份有限公司深圳分公司二三 年 四 月九 日 施工组织设计及专项方案会 签 页工程名称深圳会议展览中心方案内容45m层鱼腹式大梁的专项施工方案编制单位会签(章)编制单位江苏华建建设股份有限公司深圳分公司三处二工区编制二OO 年 月 日技术科初审二OO 年 月 日安全科初审二OO 年 月 日技术主任审核二OO 年 月 日审批单位会签(章)技术处审核二OO 年 月 日安全处审核二OO 年 月 日总工室审批二OO 年 月 日 目 录1、编制说明42、45m层鱼腹式大梁的工程概况43、模板支撑系统的布置.73.1、跨内鱼腹梁支撑系统的计算.9
14、3.2、垮外悬挑梁钢管承载力验算134、砼施工缝的设置和构造配筋措施134.1、水平施工缝的设置位置134.2、增加构造配筋措施134.3、施工缝处理145、施工布署及组织措施.155.1、施工段划分及施工流向155.2、施工组织管理网络155.2.1、45米层高支模技术保障管理措施155.2.2、支撑系统全过程安全检查、监控管理网络.165.2.3、奖罚措施185.2.4、施工进度计划186、分部分项工程施工的方法和技术措施.196.1、鱼腹式大梁钢筋的制作与安装196.2、鱼腹式大梁模板的制作与安装216.3、鱼腹式大梁砼浇筑的施工措施226.4、施工缝的留置与施工技术措施256.5、跨内
15、支撑系统的搭设.256.6、跨外支撑系统的搭设.286.7、支撑系统的拆除.297、安全组织技术措施.30 7.1、安全技术管理网络.30 7.2、安全组织措施.301、编制说明 深圳会展中心45M层的鱼腹框架悬挑梁,设计上采用了超高大跨度预应力砼结构,柱网尺寸大、悬挑架高、断面大、自重大,施工中计划分二次浇筑,既要保证施工支撑系统的安全,同时也要保证砼浇筑的质量。针对本工程的特点,特制定此专项施工方案。2、45m层鱼腹式大梁的工程概况 深圳市会议展览中心工程45m层鱼腹式大梁位于B2区(416轴),结构形式为预应力砼双梁。砼强度为C40。断面尺寸为1000mm282653686350mm,双
16、梁净间距2000mm,其中(4)轴与(16)轴为单根鱼腹梁,其余轴线上均为统一尺寸的双梁,共计24根鱼腹梁。柱网为3030m,因此鱼腹梁跨内净距为26 m,垮外悬挑出13.418m。鱼腹梁受力筋主要是级钢40,箍筋为14,腰筋为18,详见下表所示。 鱼腹梁剖面图45米层鱼腹梁配筋一览表轴线位置悬挑部分100028265368跨内部分10005368635048及1216轴共18根箍筋14-100/200(6)上部3040 10/10/10下部3040 10/10/10支座加受压短筋1540箍筋14-100/200(6)腰筋5818上部1740 10/7下部1740 7/109、11轴共4根箍筋
17、14-100/200(6)上部2740 9/9/9下部2740 9/9/9箍筋14-100/200(6)腰筋5818上部2040 10/10下部2040 10/1010轴共2根箍筋14-100/200(6)上部2740 9/9/9下部2740 9/9/9箍筋14-100/200(6)腰筋5818上部2540 10/10/5下部2540 5/10/10注:支座加受压短筋是指悬挑梁根部锚入柱700,伸入梁4000。 箍筋为6支箍。 以56轴和78轴为例所示鱼腹梁平面图(相同)3、模板支撑系统的布置 因为跨内鱼腹梁断面大、自重荷载大,应用高支模方案设计的钢管组合柱1250mm2000mm(250),
18、设置在跨内Ln/3处。双梁其余部分立杆250400、梁间板500400,横杆步距均为1000mm, 45m鱼腹梁支撑系统 支撑节点大样图: 3.1 跨内鱼腹梁支撑系统计算 支撑系统设计的基本假定: 跨内支撑系统的布置原则是确保能支撑1/2梁高,即3.35米高砼、全部模板支撑系统自重、全部施工荷载。当预先浇筑的1/2梁高砼达到设计要求时,经验算假设它完全能够支撑自身的全部自重,二次浇筑砼自重和施工活荷载仍由原完全保留的支撑系统承担。 跨外支撑系统按全截面砼自重,支撑系统自重、施工活荷载系全部组合后,设计梁板下的支撑系统,并与跨内主体结构之间设置有效的连接。当跨内留置水平施工缝时,随水平标高也分两
19、次浇筑,其目的是增加系统平面外的抵抗能力。以上设想及荷载验算均应及时向设计院汇报,并征得同意方可实施。 鱼腹梁在跨内净跨为26m,截面为100053686350mm,其自重大。在未进行预应力张拉之前,难以承受其全部自重荷载,因此在跨内Ln/3处设置钢管组合柱。其形式为1250mm2000mm(250mm,横杆步距1000mm),将26m的大梁近似地变成三跨连续梁,降低了其下面的支撑荷载,计算简图如下所示: 单根立杆稳定性验算:管选用483.5普通脚手焊接钢管。截面积:A489mm2 回转半径:i=15.78mm惯性距:I12.19104mm4 截面抵抗距:W5.08103mm3钢管自重:R3.
20、8kg/m 强度设计值:f205N/mm2主要采用直角扣件(1.25Kg/个)、旋转扣件(1.5Kg/个)和对接扣件(1.6Kg/个)三种,抗滑移按6KN/个验算。钢管脚手架的设计主要是验算立杆的稳定性,可按两端铰接的受压杆件来简化计算。长细比 =L/i=L/1.59 式中L为计算长度,取横杆的步距。N= Af接上述式计算出不同步距、不同节点形式的N值。483.5钢管立杆容许荷载表 KN横杆步距(mm)对接立杆搭接立杆备注和托撑节点或扣件节点100035.7KN13.9KN同时采用对接立杆和托撑节点时,本设计最大允许承载力为20KN。采用搭接立杆或扣件节点时,最多考虑为双扣件,允许承载力应不得
21、超过12KN。 125033.1KN13.0KN150030.3KN12.4KN180027.2KN11.6KN组合钢管柱承载验算 因鱼腹梁分二次浇筑,第一次浇筑的砼达到设计强度时,足以承受其自重荷载。第二次浇筑砼时高3m,故只需验算第一次最大截面高度为3350mm时的砼、模板、支撑系统的自重荷载和活荷载的组合值。 砼自重:2613.587KN/m 模板:(261+266.352)0.75/26=10.3KN/m 恒载合计:87+10.397.3KN/m 活荷载 2.512.5 KN/m 设计线荷载 97.31.2+2.51.4115 KN/m 因此N1=N20.5 q(AB+BC)= 0.5
22、(7+12)1151093 KN/m121T 钢管组合柱截面形式钢管组合柱由6954根48组合而成,横杆纵横正交布置,试取15m验算,不利惯性距IYIY(Ii+Abi2)54I18A625218A375218A1252 5412.1910418489(625237521252) 482017cm4iy IY/A 482017(544.89) 42.7cmL0/iy1500 / 42.735.1查表得0.87钢管自重 G3.84155426221kg所有施工荷载组合值 N121T 钢管截面积A5448926406mm2(NG) / (A)(1.2110662210)/ (0.8726406)55
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