搜索结果: 1-15 共查到“知识库 建筑材料”相关记录269条 . 查询时间(2.468 秒)
夹心保温砌体房屋振动台试验研究
夹心保温 砌体房屋 抗震性能 振动台试验
2021/4/15
黏土砖是我国北方地区广泛使用的主要建筑材料。通过水平灰缝和竖向灰缝连接成整体砖墙，承受竖向荷载和水平荷载。传统的砌体墙热工性能差，在我国最寒冷的地区其厚度可达半米，过大的厚度，一方面使建筑自重过大，抗震能力较差，另一方面也占用较大的居住面积。为解决这一矛盾，文中研究的夹心保温砌体砖墙黏土夹层砖墙是通过在钢筋网连接的两层较薄的砖墙之间插入隔热层，形成夹心保温砌体房屋。为研究其抗震性能，对一个1/2比...
为对纤维复合板损伤识别进行研究，采用PZT-SLDV模态测试系统，以存在凹痕损伤四边固定约束的纤维复合板为例，对纤维复合板的损伤检测进行试验和数值模拟研究。通过表面黏贴压电陶瓷(PZT)片对纤维复合板进行激励，再利用SLDV测得其各阶位移模态，并应用中央差分法计算曲率模态进行纤维复合板的损伤识别；最后，利用ABAQUS有限元分析软件，建立含损伤的四边固定约束纤维复合板有限元模型，并对建立的有限元模...
新型秸秆纤维混凝土实心砖的性能试验研究
混凝土实心砖 秸秆纤维 力学性能 物理性能
2019/1/21
为了有效利用农业剩余物研制出具有良好综合性能的新型墙体材料，研究了秸秆纤维混凝土配合比，并对比新型秸秆纤维混凝土实心砖（new straw fiber solid concrete brick，NSFCB）与普通混凝土实心砖（general solid concrete brick，GCB）的力学性能和物理性能。进行了秸秆纤维混凝土抗压强度试验，以及实心砖大面抗压、抗折、保温隔热和干缩试验。对砖的...
CONSERVATION OF THE SINCLAIR INN MUSEUM, AND THE PAINTED ROOM ANNAPOLIS ROYAL, NOVA SCOTIA, CANADA
Heritage Building Wood Murals Conservation Preservation Masonic Canada
2017/8/31
Conservation of the historic 18thC. Sinclair Inn Museum, and of the recently discovered late 18th/early 19thC. unique panoramic wall paintings located in an upstairs room, are co-dependent. This proje...
对WNQ570桥梁钢及其对接焊缝进行了疲劳裂纹扩展速率和疲劳裂纹扩展门槛值测定试验，采用两种不同数据拟合方法分别得到具有95%保证率的疲劳裂纹扩展参数。结果表明：本批次的WNQ570钢材具有良好的疲劳裂纹扩展性能，其中对接焊缝疲劳裂纹扩展速率高于母材；在应力强度因子幅值处于10 MPa·m1/2～70 MPa·m1/2的常规区间时，基于单试件数据点的处理结果对应的裂纹扩展速率明显高于基于成组数据点...
高强钢组合偏心支撑钢框架结构中耗能连梁作为屈服构件采用普通钢（如Q345），而非耗能构件采用高强度钢材（如Q460），高强钢构件不仅有效降低了构件截面、节约钢材、降低造价，而且减弱了偏心支撑结构的刚度，使得层剪力分布状态与传统偏心支撑结构不同。为了研究这种新型结构在罕遇地震作用下的弹塑性层剪力分布状态，依据偏心支撑钢框架结构基于性能的设计方法设计了具有理想失效模式的5层、10层、15层和20层算例...
该文采用Ф80 mm的分离式霍普金森压杆装置，研究了纳米改性后的UHTCC（ultra high toughness cementitious composites）在高速冲击压缩应力状态下的力学响应，并与常规UHTCC材料、钢纤维混凝土进行了对比。试验得到了各组材料在准静态和动态共计4组应变率（2.36×10-5 s-1、120 s-1、160 s-1、200 s-1）下的准静态压缩强度及冲击压...
研究含周期分布压电纤维的压电复合材料的有效电弹性性能。通过在材料代表性体积单元边界上施加位移和电势周期边界条件，利用有限元法求得了代表性体积单元内的电弹性场。由平均电弹性场和压电复合材料有效电弹性性能定义，预测了圆环形截面压电纤维复合材料的有效电弹性系数。通过算例，比较了相同压电材料体积分数下圆环形截面压电纤维复合材料与圆截面压电纤维复合材料有效电弹性性能的差异，讨论了圆环形截面压电纤维内部非压电...
Core-House: a Proposal for Re-Inhabiting Underused Buildings
Mill-Building Residential Live-Work
2014/10/29
This thesis is an exploration of how small independent residential units added one at a time can offer old buildings and the cities they are in the opportunity to gradually grow and change – in a way ...
Children's Cancer and Transplant Hospital: a Micro Town within a Bubble
Visual connection Pittsfield Isolation
2014/10/29
As the greatest considerations in health-care design have traditionally been functional —hygiene, efficiency, and flexibility for changing technology— hospitals have evolved to become dehumanizing spa...
Post-Anthropocentric Dwelling Conditions
Post-Anthropocentric Dwelling Conditions controllable environment
2014/10/29
The way we build our environment today is a process of protecting ourselves from the elements of nature. We build walls, roofs, and windows; we create a more predictable and controllable environment t...
Material Characterization and Computational Simulation of Steel Foam for Use in Structural Applications
Material Characterization Computational Simulation Steel Foam Structural Applications
2014/10/22
Cellular metals made from aluminum, titanium, or other metals are becoming increasingly popular for use in structural components of automobiles, aircraft, and orthopaedic implants. Ci vil engineering ...
Development of Anchorage System for FRP Strengthening Applications Using Integrated FRP Composite Anchors
Anchorage System FRP Strengthening Applications Integrated FRP Composite Anchors
2014/10/22
Over the past three decades the use of externally bonded fiber reinforced polymer (FRP) materials for structural strengthening applications has become an accepted and widely used method. A primary con...
Investigation of the Behavior of Open Cell Aluminum Foam
Investigation of the Behavior Open Cell Aluminum Foam
2014/10/22
The study investigates the behavior open cell aluminum foam in scenarios applicable to potential use in structural applications. Foam behavior was examined through mechanical testing, computer modelin...
Anchorage of Carbon Fiber Reinforced Polymers to Reinforced Concrete in Shear Applications
Carbon Fiber Reinforced Polymers Reinforced Concrete Shear Applications
2014/10/22
Due to ongoing deterioration and lack of maintenance, a need to rehabilitate and lengthen the serviceable lifetime of deteriorated structures has grown. The crucial cause in the deterioration of our i...