Improved design and monitoring of wind bracing for fresh masonry****

各种先进材料在建筑行业中有了长足的发展，但砌体仍然被认为是最具成本效益的材料之一。如果设计得当，砖石结构可以抵抗风或地震引起的较大幅度的横向荷载。然而，在施工阶段，当砖石结构尚未达到完全强度时，它们很容易受到风致横向荷载的影响。事实上，工地的自立式砖墙经常被吹倒，引致材料损失、工人受伤和建筑成本上升。临时抗风支撑通常用于在工作现场对砖石结构进行横向支撑，并产生足够的横向强度，直到获得固有的完全横向支撑。然而，与主要承载支撑不同的是，临时支撑的设计相对主观，容易出错，其突然失效可能会导致施工人员在现场受伤或死亡。行业合作伙伴加拿大砖石设计中心(CMDC)预计，TB的准确设计和放置将作为各种咨询公司和Mason接触器的潜在工程指南的紧迫性。这项建议的主要目的是与业界伙伴发展和分享建筑地盘结核病系统的严格设计指引和监测技术，并消除砖石行业采用的近似设计策略。一旦开发完成，CMDC和整个砖石行业将受益于显著的成本节约，防止TBS故障和工地重复更换TBS，为梅森承包商和工人提供更安全的工作场所。

There has been significant development of various advanced materials in construction industries, however masonry is still considered as one of the most cost-effective materials. Masonry structures, when properly designed, can resist wind or earthquake-induced lateral loads of large amplitude. However, they are vulnerable to wind-induced lateral loads caused during the construction stage when the masonry is yet to achieve full strength. In fact, free standing masonry walls at job site have been frequently blown over, resulting in the loss of materials, injury to workers and a subsequent increase in the construction cost. Temporary wind bracing is commonly used to laterally support masonry structures at job site and develop adequate lateral strength until a time where inherent full lateral support is obtained. However, unlike the primary load bearing bracing, design of temporary bracing (TB) is relatively subjective and error-prone, and their sudden failure may lead to injury or death of construction workers at job site. The industry partner, Canadian Masonry Design Centre (CMDC), anticipates the urgency for accurate design and placement of TB that would serve as potential engineering guideline to various consulting firms and mason contactors. The main objective of this proposal is to develop and share with our industry partner, stringent design guidelines and monitoring technology of TB systems at construction site and eliminate the approximate design strategies adopted by the masonry industry. Once developed, CMDC and entire masonry industry will be benefitted in significant cost-savings in preventing faulty TBs and their repetitive replacement at job site, resulting in safer and secure workplace for mason contractors and workers.