地区是最好的

为23930万美元德克萨斯州大学大学·艾尔森·阿尔伯特B.和玛格丽特M.代克斯克扩张，麦卡锡建筑。该公司及其团队成员在休斯顿德克萨斯州德克萨斯州医疗中心的现有医院管理了一个复杂的扩张，从埃德德克萨斯州和路易斯安那州的2011年继续运作盈利。新利18备用

“这个项目有很多东西，使它不寻常，”达拉斯麦卡锡项目总监Ben Johananeman说。“在经营12层医院的顶部添加12个故事是最具挑战性的。”503,000平方英尺的扩展包括24层的补充，电梯和会议室与1998年代建筑物相邻，并将其绑在每个楼层的现有结构中;240个新住院房间;药房;设施支持空间;观察牌;三层壳地板有144个未来患者房间的房间;和现有空格和基础设施升级的翻新。McCarthy于2007年12月开始设计建设项目，并于2010年9月完成。

Design issues

由HKS建筑师的原始设计达拉斯允许添加只有10层。随后的建筑守则改变，医院通缉畅通的客房。适用于预期楼板的任务不允许相同数量的房间。“我们挑战设计团队创造性地思考，”MD安德森项目总监Janet Sisolak说。该团队包括MD Anderson和HKS建筑师，通过了。

“为了提供额外的空间，我们从使用最初计划的纯粹墙体扩展到一个完全不同的横向系统，”休斯顿结构工程公司沃尔特P摩尔的助理设计工程师表示，聘请了。“我们将俯卧片从透过墙壁转移到整个楼板。”

打开楼板允许HKS重新设计患者室，每栋卧室添加四间客房。在新的和现有结构之间的机械地板和新的柱和束结构系统产生的开放式设计允许医院移动楼梯和追逐，增强单位的循环和增加支撑空间。“当人们离开电梯时，我们为一个人创造了一个有助于Wayfinding的人的明确的视线，”诺曼摩根，一个校长，带有香港的校长。

Although it was anticipated the additional floors would continue the building's exterior patterns, that was not the case. The design-build team maintained the iconic MD Anderson pink granite appearance but used a lighter and thinner glass-fiber reinforced concrete skin and curtain wall system.

"From day one, we tried to get additional floors [by using] a lighter skin," Morgan says. "We made multiple trips to get a color that matched, built more than 20 mock-ups and, eventually, lifted full-size panels up with a crane and set them in place before mass-producing them."

此外,该设计团队悬臂成矿ding's corners on the north side out, adding more square footage to the floor plate. "The moment frames usually have a deeper beam, and the deeper beam allowed us to extend the cantilevers farther than originally planned, which added square footage," Sims says.

The team also eliminated set-in windows and captured 4 ft per floor by pushing the curtain wall out, allowing for larger rooms. "We worked with the existing grid to increase the amount of rooms per floor, and there was some pushing and pulling," Morgan says. HKS also designed a rooftop observatory.

该项目由其他结构和第四个侧面接壤，繁忙的街道，留下一座塔式起重机，其中麦卡锡建于现有电梯轴。这种需要搬迁的冷水和其他管道。该团队切割屋顶，安装锚螺栓，并在街道上放置在四个周末的巨大的移动起重机掉下塔式起重机件。“我们在每层楼上进行了一名铁艺，以确保它被送进了，”约翰曼说。“我们在项目期间使用了单塔起重机。随着垂直扩张越来越高，我们一直在加入它。”

快节奏

Work continued 24 hours a day. Steel erection took place at night, and concrete was poured during the day. Concrete came up the side of the building, using the tower crane mast located next to a hoist tower and anchored periodically as the building progressed.

"The idea came to me because I knew this method would provide something strong enough to mount the pipe to, would allow access to the pipe if necessary and would minimize vibration transfer into the existing building," says Greg Jarratt, McCarthy's project superintendent. According to the firm, this unique solution had never been used before to its knowledge.

Early in the job, keeping the existing space dry was critical. When Hurricane Ike struck in 2008, McCarthy had brought the columns through the permanent roof and raised four stories of structure above the building with a temporary roof. McCarthy employees rode out the storm on the 12th floor for two days to catch water leaks on the project and on other parts of the building. McCarthy had preplanned for a post-storm crane inspection and was operational in two days.