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分析了ALC板特点,主要论述了ALC板墙体施工过程中的技术问题,如生产技术问题、安装技术问题以及控制技术问题等,并提出了解决对策,如优化生产工艺、改进安装方式以及改善内外环境等,希望可以为相关人员提供参考,提升ALC板墙体的施工质量. 相似文献
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ALC墙板的施工技术研究 总被引:1,自引:0,他引:1
介绍了ALC板适用范围及特性.通过工程实例,介绍了施工过程中外墙板和内墙板的安装连接构造、施工工艺流程,阐述了ALC板安装过程中的控制要点及质量要求.提出了施工中减少板材损耗的措施.通过优化施工顺序、合理安排施工作业人员形成流水作业,保质保量地完成了施工任务,缩短了工期,取得了预期效果,可为类似工程提供借鉴. 相似文献
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蒸压加气轻质混凝土隔墙板(简称ALC板)自重轻,延性好.相对传统砌体隔墙,安装方便,所产生的建筑垃圾少.通过ALC板与传统隔墙板综合性能对比,分析了ALC板工作性能,同时结合实际施工案例,介绍了ALC板施工工艺,为ALC板施工提供借鉴. 相似文献
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采用ALC板(蒸压加气混凝土板)作为屋面板时,可直接在屋面钢梁上拼装,但对其防水构造及细部节点施工要求很高。结合深圳市前海展示厅扩建工程的应用实际,制订了一套ALC屋面板安装及防水节点优化技术,不仅解决了ALC板拼接接缝及穿过ALC板的钢立柱吊洞等部位容易发生渗漏的难题,同时也确保了ALC屋面板的施工质量。 相似文献
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《Thin》2013
The floor joists of cold-formed steel (CFS) structures often require large web openings. Reinforcement of such openings may mitigate the detrimental effects arising from such web openings. This paper is based on an experimental investigation conducted to establish reinforcement schemes for CFS joists with a large web opening located in high shear zones. The investigation considered a large web opening cut out in the middle of the web of a lipped channel section. Circular and square large web openings of about 65% web depth were considered. The shear tests involved short span specimens, simply supported at the ends, and subjected to a mid-span point load. This paper presents the experimental set-up, and the test results associated with 27 individual tests consisting of nine sets of three identical tests. These test sets consist of cold-formed steel joists sections with (a) no web opening, (b) webs having circular or square openings, (c) webs having reinforced openings. Three different reinforcement schemes were investigated, however, the test results indicated that the proposed “Vierendeel truss type reinforcement scheme” can restore the original shear strength of such sections having circular or square openings. Overall, this study establishes a cost-effective reinforcement scheme for cold-formed steel joists having a large web opening in high shear zone. 相似文献
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为了研究内嵌加气混凝土(ALC)墙板对框架结构抗震性能的影响,进行了带内嵌ALC填充开洞墙板的两层钢框架结构足尺模型振动台试验。采用了预埋连接节点以减少板材连接对墙板造成的损伤,并采用自攻螺钉对窗口部位进行加固。试验研究了框架的振动特性及墙板的损伤情况,分析了内嵌加气混凝土墙板对钢框架结构的频率、阻尼比、刚度、楼层加速度以及楼层位移的影响。研究表明:带加气混凝土墙板钢框架结构的层间抗侧刚度较纯钢框架的提高了111%;结构的阻尼比为6.94%,大于结构设计中3%的标准;墙板位移比钢框架位移略小,表明该连接节点具有一定减震效果;模型结构的加速度放大系数随地震烈度的增加而逐渐增加,表明结构逐渐进入塑性状态;在8度罕遇地震作用下,墙板位移角达到1/49且未发生墙板脱落或者坍塌现象,仅墙板有较小损伤,表明墙板及连接节点具有良好的抗震性能。 相似文献
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为探究错列开洞剪力墙的抗震性能,通过有限元软件ABAQUS对错列开洞剪力墙抗震试验进行数值模拟,通过试验结果验证所建立精细化有限元模型的准确性。基于已验证的有限元模型开展参数分析,研究剪跨比、轴压比、开洞率以及有无附加纵筋等参数对错列开洞剪力墙抗震性能的影响。结果表明:不考虑轴压比时,剪跨比较大的剪力墙主要破坏于底部翼缘及墙体; 随着剪跨比的提高,剪力墙的峰值荷载减小,延性提高; 随着轴压比的提高,剪力墙的延性降低,峰值荷载先增加后减小,且峰值荷载的拐点在轴压比为0.2~0.5之间; 剪力墙的峰值荷载和延性随开洞率的提高而降低; 考虑附加纵筋时,若错列开洞剪力墙的开洞率较小且满足规范基本要求时,可以按照无洞口剪力墙计算其承载力; 考虑了附加纵筋影响的错列开洞剪力墙具有较好的承载力和延性,无附加纵筋的错列开洞剪力墙应力集中现象较严重; 开洞率较小时,剪力墙底部是薄弱区域,以剪切破坏为主; 开洞率较大时,剪力墙受到不协调的变形作用而发生破坏。 相似文献
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为方便设备管线通过,采用腹部开孔梁可有效降低楼层高度,但开孔会削弱梁的整体刚度,导致孔洞附近的应力及内力重分布十分复杂。为研究腹部矩形开孔的钢筋混凝土伸臂梁的受力性能,以正反弯矩比、孔洞位置、剪跨比及孔侧斜筋作为主要变量,对12根钢筋混凝土开孔伸臂梁和1根钢筋混凝土实腹伸臂梁试件进行了两点加载下的受剪性能试验。研究了各种参数对开孔伸臂梁的裂缝开展及破坏形态、应变分布、变形和受剪承载力等受力性能的影响。试验结果表明:正反弯矩比和孔心剪跨比改变了伸臂梁在孔洞附近的受力状态,导致破坏时孔侧呈现出不同的裂缝形态。配置孔侧斜筋后,孔侧混凝土和箍筋更好地发挥协同抗剪作用,试件的受剪承载力显著提高,裂缝开展和变形均得到有效的控制。利用混凝土开孔简支梁发生孔侧剪压破坏的受剪承载力公式对开孔伸臂梁的受剪承载力进行计算,并和试验数据进行对比可知,按开孔简支梁的算式对开孔伸臂梁的受剪承载力进行计算,计算结果与试验结果的平均比值为0.96,方差为0.07,结果偏于安全。 相似文献
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采用钢筋混凝土圆孔梁是一种降低高层建筑层高的有效途径。由于梁腹开孔后破坏了钢筋混凝土梁的受剪机理,尤其当孔洞设置在框架梁端附近时,在地震作用下,使高层建筑框架梁端塑性铰区域的受力性能更为复杂。为解决这类框架梁的设计问题,本文通过24根圆孔梁及2根对比实腹梁的低周反复荷载试验和静力荷载试验,结合对国内外有关试验的研究,基本摸清了圆孔梁的静力性能及抗震性能。根据受力特征和破坏形态的机理分析,提出了圆孔梁的实用强度计算方法及有效的配筋构造措施。 相似文献
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The direct design method recommended by ACI is commonly used for the design of flat slabs. Since the flexural stiffness of the waffle slab varies along the span, it is expected that the distribution of moments is different from that of flat slabs. Current design procedures do not provide recommendations specific of waffle slabs. Designers smear the contribution of the ribs and use the design guidelines for flat slabs to design ribbed slabs. In addition, the effect of openings on the response of waffle slabs is not fully explored. Therefore, modified moment coefficients are needed for waffle slabs. In this paper, numerical simulations using ANSYS are used to study the response of waffle slabs with and without openings. The main objectives of this paper are: (1) to obtain the design coefficients for the column and the field strips of the internal panel of a waffle slab and (2) to study the effect of openings and stiffening ribs on the design coefficients. Ninety Linear and non-linear analysis models using ANSYS were performed in the study to evaluate the response of various waffle slabs under uniform loading. The main parameters evaluated are the column size, the solid portion size, the opening size and its location, and the effect of stiffener ribs around the opening. The non-linear finite element model was verified using existing experimental results for two waffle slabs. The moment coefficients developed in this paper were used to modify the existing ACI flat-slab coefficients to be used for waffle slabs. 相似文献