Operation Phase Problems of Prefabricated Residential Buildings with Integrated Autoclaved Aerated Concrete Panel Walls

Growing technical problems with the maintenance of precast concrete housing stock result in the search for efficient repair methods. The paper analyses the effects of flaws in the design concept and assembly accuracy of integrated AAC （autoclaved aerated concrete） panel walls, type GWO （Gazobetonowa Wielka P｜yta Ostonowa which means large cover panel from aerated concrete in English）, used as curtain walls in a system of precast concrete housing blocks erected in Lublin. The results of in-situ observations and laboratory tests of the panel walls have been described, and the opinion on the further use of these elements has been presented. As for the analysed case, there is no possibility of replacing damaged elements, thus, additional reinforcement with steel tendons has been proposed as a repair measure.

Research on Technical Solutions to Renovate the Reinforced Concrete Constructions in Vietnam

During the use of constructions, they will be degraded. Due to the negative impact on structures such as increase in vertical load, horizontal windy load needs to evaluate the current state of the constructions before renovating, especially the current state of the main structural system whether necessary to carry out repair and reinforcement or not. In addition, the inspection of the current status constructions before renovating is also the legal basis for the granting of construction permits to renovate and repair degraded works. Reinforced concrete buildings in the coastal areas in Vietnam, in particular, are working in the marine environment leading to damage the reinforced concrete construction. It should be significantly noted. Although there have been legal documents related to the inspection of constructions issued in Vietnam, the detailed contents and procedures of institution for each type of construction have not been mentioned yet. Therefore, the topic research paper of “research on technical solutions to renovate constructions with reinforced concrete structures in Vietnam” is to improve the quality and efficiency of construction. This investigation in Vietnam is very essential. This study uses the method of surveying the current state of the construction works in use, using the experimental sampling method to analyze and evaluate the damage of the work, then propose typical solutions to repair construction. The purpose of this study is to provide a process to check the damage of the works, and to propose solutions to repair them. This work is very important and has practical significance, helping managers to maintain works better.

Earthwork and the Strategies of Concrete Construction Technology Application in Building Construction

The pouring of mass concrete and earthwork account for a large proportion in building construction,which can play a decisive role in the quality of the building.Therefore,it is necessary to understand the technology of earthwork and concrete engineering in the process of building construction and propose reasonable application strategies.

SEMI-TIERED HOUSING FOR LATERITE EARTH SLOPING LANDS-A SUSTAINABLE SOLUTION WITH ALTERNATIVE MATERIALS AND METHODS

Increased demand for affordable housing and the limited availability of flat terrain for its construction are two major problems facing the provision of houses of acceptable quality in many countries around the world.There is limited research integrating the utilization of a stepped approach to sloping terrain with appropriate housing models to minimize slope instability potential.This paper introduces a new semi-tiered housing model where the footprint of the house is located on tiers prepared with short vertical cuts of 1.5-2m.Such vertical cuts are found to be stable with laterite soil which is a commonly available type of soil in the tropics.The excess soil generated from cut material was transformed into cement stabilized rammed earth,which is a cost effective material with low embodied energy.This is an ideal candidate for the construction of retaining walls and foundations,and such applications are demonstrated with adequate details.Further,many other types of sustainable building materials are highlighted with a case study of this housing model in a scheme of 13 housing units in Sri Lanka.The attention to detail required in construction and the applicability of alternative building materials and methods to improve the sustainability of such houses have been discussed in detail.These semi-tiered houses have the potential to address many of the current construction challenges.

高层房屋建筑施工技术要点

文章以山西省太原市某高层住宅工程为例,从深基坑支护、地基处理以及大体积混凝土施工等方面,详细阐述具体的施工技术要点与注意事项,以期为相关从业人员提供参考,全面提高高层房屋建筑施工质量,打造高品质建筑产品。

房屋建筑工程大体积混凝土结构施工技术

为提高房屋建筑中大体积混凝土结构施工技术的应用水平,论文引入建筑工程实例进行技术探讨,提出大体积混凝土结构的配合比设计方案,确定材料的取用方式,分析了大体积混凝土混合料拌和、浇筑、振捣、养护等工序的施工技术应用要点。

基于组合赋权云模型的砖混结构自建房安全评估

为准确实现对砖混结构自建房安全状态的科学评估,考虑到结构体系的复杂性和评估指标的模糊性,本文提出一种基于组合赋权云模型的安全评估方法。首先,从地基基础、结构承载力、抗震构造措施、结构外观质量、建筑材料强度、结构相关尺寸、围护结构7个方面构建砖混结构自建房安全评估指标体系,并根据标准规范给出评估指标的衡量准则。其次,选用G1法和熵权法主客观综合确定指标权重,并构建砖混结构自建房安全评估云模型。最后,应用该模型对云南省罗平县某砖混结构自建房进行安全评估,得到的评估结果与实际评定结果一致。研究表明:所构建的组合赋权云模型较为真实全面地反映砖混结构自建房安全状态,可为我国砖混结构自建房安全鉴定与隐患排查工作提供参考。

房建工程中建筑屋面防水技术的研究与应用

针对房建工程中的防水处理问题,论文以某房建工程为例,分析了房建工程施工现状,采用建筑屋面防水技术重建防水层,并进行了10d蓄水测试,通过连续监测数据证实了防水施工的有效性,确保了工程的高标准防水要求得到满足。

房建施工中混凝土结构防渗漏工艺的要点分析

由于设计选材、施工技术等问题,房建工程混凝土结构防渗漏效果存在一定差异,论文主要从材料、温度、水化热、结构设计、外加剂等方面分析了房建施工中混凝土结构渗漏的原因,总结了混凝土结构防渗漏工艺要点,并探索了混凝土结构裂缝处理方案。

房屋建筑钢筋混凝土结构稳定性施工技术研究

研究主要简述了工程概况,进行了稳定加固位置标定,设定加固构件及板筋锚固。通过多点位的形式,提升整体的支撑稳定性,实现多点位板筋平衡绑扎,以此为基础,通过赶浆法进行混凝土稳定浇筑,以后期养护与核验来最终实现施工处理。测试结果表明:针对随机选定的6个房屋建筑钢筋混凝土结构支撑点位,在5.5m、8.5m、11.5m不同的背景下最终得出的承载值均在620kN以上,由此可知此次设计的建筑钢筋混凝土结构稳定性施工技术更为精细化、稳定性强,效果更好,以期为类似工程提供参考。

房屋建筑工程混凝土后浇带施工技术研究

在房屋建筑工程施工中,混凝土是房屋建筑施工的重要基础,同时也直接影响到整个房屋工程质量的稳定性和耐久性。而后浇带施工技术的出现,则可以有效控制房屋裂缝的出现,从而使房屋结构的防渗漏水平得到显著提升。本文分析了房屋建筑工程混凝土后浇带施工技术,并对房屋建筑工程混凝土后浇带施工技术的应用要点展开分析,为后续房屋建筑工程混凝土后浇带施工提供参考。

玄武岩纤维筋钢纤维混凝土梁的受弯性能研究

为分析玄武岩纤维筋钢纤维混凝土梁的抗弯性能,文中开展玄武岩纤维筋钢纤维混凝土梁的受弯性能试验,分析钢纤维体积率对钢纤维混凝土梁荷载、挠度以及位移等力学响应的影响。结果表明:与普通钢筋量相比,钢纤维掺量为0.5%、1%、1.5%、2%的开裂荷载增幅分别为31.4%、43.5%、52.5%、58.3%;极限荷载增幅分别为9%、13.8%、40.6%、30.5%;钢纤维掺量为0.5%、1%、1.5%、2%的最大位移降幅分别为6.4%、9.3%、1.5%、18.3%;残余位移降幅分别为6.8%、15.1%、18.2%、5.3%;所用混凝土梁的使用荷载均占极限荷载的45%左右。

房建工程中装配式混凝土结构施工技术应用研究

装配式混凝土结构是现代房屋建筑工程常见的结构类型,具有工期短、质量好、效率高等优势。为此,文章围绕装配式建筑进行研究,分析了装配式建筑的概念和优势,阐述了房建工程中装配式混凝土结构施工技术的要点。旨在规范装配式混凝土结构施工流程,提升房建工程施工质量和房建工程综合效益。

上海大歌剧院结构施工技术研究

上海大歌剧院工程总体外形如同一柄展开的中国扇,其飘逸灵动的建筑艺术效果极具视觉冲击力,但随之而来的是前所未有的极端复杂结构。综合分析了上海大歌剧院的结构特点及难点,并对施工过程中的总体施工流程以及结构难点的关键施工工艺展开了介绍。所述关键技术成功解决了上海大歌剧院项目大跨异形曲面悬挑结构建设中的诸多难题,确保了建造施工过程安全及结构质量。

优化房屋建筑施工钢筋混凝土结构施工技术应用研究

本文为了进一步提升房屋建筑的稳定性以及安全性,对钢筋混凝土结构施工技术进行深入的研究与分析,以此保证房屋建筑施工的质量以及效率,降低工程建设成本支出。通过有效利用钢筋混凝土结构施工技术,不仅可以提升房屋建筑施工质量,从根本上提升后期施工的安全性,同时也可以在很大程度上节约一定的施工时间与精力。

钢筋混凝土房屋设计中结构设计问题探讨

本文阐述了钢筋混凝土结构设计的安全性、适用性、经济性和环保性等性能要求,针对钢筋混凝土房屋结构设计中的普遍问题,包括地基和整体建筑结构抗震性能、钢筋混凝土房屋结构的裂缝问题,有针对性地提出了相关结构问题的优化改进措施和注意事项。

基于全现浇混凝土外墙下全穿插工艺组合施工方案研究

本研究聚焦于位于杭州市富阳区的一个住宅建设项目,该项目采用了创新的全现浇混凝土外墙技术,并结合全穿插工艺的组合施工方案。在设计和施工过程中,项目团队面临结构稳定性、环境适应性、施工速度与质量平衡等多重挑战。通过实施精细化进度管理和引入多项技术创新,如智能化混凝土配比、高效能模板系统、无人机和机器人辅助施工等,项目不仅保证了施工质量,还实现了施工周期和成本的显著优化。

农村砖混结构房屋抗震性能提升路径探析

本文旨在深入探析农村砖混结构房屋抗震性能提升的路径。首先,通过科学评估与改造加固,深入剖析房屋结构状况,为制定有针对性的改造方案提供科学依据。其次,强调技术创新与标准改进,并通过风险认知与监测预警,提高对潜在地震风险的认知和预警响应能力。最后,探讨了提升抗震性能的现实意义,包括减轻地震灾害损失、推动公共安全意识、促进社区整体稳定,为农村可持续发展提供有力支持。

房建工程中墙体砌筑施工与加固工程研究

针对现阶段房建工程中墙体砌筑施工与加固工程的相关问题,分析了墙体砌筑施工的基本步骤和技术要点,提出了嵌入钢筋加固墙体的方法和要点。以某希望小学工程为对象,对墙体的砌筑施工和加固工程进行质量检测控制。结果显示,墙体的物理特性均符合建筑要求,墙体温度均衡,约为16~24℃,相对湿度为4%~13%,全部合格。加固后的墙体相比于未加固墙体刚性程度极大提高,累计耗能提高约2倍。