Horizontal and Vertical Icons: Looking Back at Two of 百乐博app’s Most Defining Projects in North 德州

 |  建筑, 民事 & 运输, 商业

Every city has its well-known structures and infrastructure that shape residents’ sense of place and hometown identity. Less commonly known are the stories of how these landmarks were built and who built them. This is true for at least two of the most recognizable features of the Dallas and Fort Worth skylines: Reunion Tower and West 7th 街大桥. 桑特在德州有超过50年的工作经验和30亿美元的收入, including a central role in the history of these two iconic projects.

达拉斯,德州城市的天际线和市中心
在1976年完成, Reunion Tower consists of a primary core surrounded by three service cores and a geodesic dome on top known by locals as “the Ball.”

一个高耸的存在在滑的形式

1976年,团圆塔正在建设中
重逢塔完工时, 达拉斯的天际线永远地改变了, and so were the construction industry’s expectations for what could be accomplished in this timespan without compromising quality or safety.

在1970年代, 百乐博app leveraged its experience with missile silo construction to become a leading contractor in the niche market of slip formed concrete cores for high-rise buildings. Our most unusual slip form project was part of the Hyatt Regency Hotel in Dallas.

562英尺高, Reunion Tower is a defining piece of the Dallas skyline and footprint, but it was built like any other high-rise structure: one floor at a time. 这些楼层建成的速度, 百乐博app前首席执行官戴夫·克劳福德表示, 究竟是什么使它的建造成为一种奇观呢. “Everyone wanted to know: how are they doing a floor a day?”大卫说. “我的意思是,我们在两个月内就完成了50层楼, 现在是2021年, 这段时间我甚至不能改造我的厨房.”

Having worked on Reunion Tower as a project engineer at age 25, Dave can recall only a handful of other projects in his career with the same feeling of time-lapse-like progress and constant public attention. Within the slip form market, precision became 百乐博app’s calling card, according to Dave. “我们的团队非常擅长‘引导’这座塔向上, compensating for shifting weight and alternating directions for pours. That’s how we could guarantee tolerances of an inch, inch and a half for structures this size. 当时很少有建筑商能做到这一点.”

A lot has changed in 45 years, but 百乐博app remains a superior builder. We keep asking the hard questions: How can we build it quicker? 更安全的? 更好的质量? We never have trouble putting a team together because people want to work with us—they know 百乐博app is innovative, 公平, and appreciative of their efforts to contribute to everyone’s success.

——Dave Crawford, 百乐博app前CEO

没有太远的桥,也没有太短的时间表

The 12 illuminated stainless steel 300-ton concrete arches that form the backbone of the West 7th 街大桥 in Fort Worth are an engineering and construction marvel. Using conventional techniques to remove and replace the nearly 100-year-old bridge would have meant closing the crossing over the Trinity River for a year or more. This was a non-starter for Fort Worth as 7th Street is the key roadway that links downtown to the cultural district, as well as the famous annual Fort Worth Stock and Rodeo Show.

fireworks july 4th celebration over illuminated steel arches of ft worth w 7th street bridge
西7街大桥, 在2013年完成, created a one-of-a-kind landmark between Fort Worth’s downtown and revitalized cultural district. 它还赢得了 AGC建设美国奖 及其他最高荣誉.

Instead, an expedited schedule was set forth, and 百乐博app came up with a creative approach to meet it. “我们预制了拱门,并将其存放在工地外, 我们的团队使用3D模型来规划和建造它们, as well as sequence the setting of the arches and critical floor beams,约翰·卡尔森说, Sr. Vice President and Strategic Business Director of 百乐博app’s 运输 Group. “We began constructing the columns that supported the arches around the same time we started building the arches themselves. This alternative phasing helped speed up the work and eliminated road closure during column construction.”

This was the first project I worked on that used 3D modeling on the actual pre-casting of the concrete arches and the setting sequencing of the arches and deck beams. It was notable because our modeling found multiple conflicts in the initial design. Had we not caught these prior to casting, it would have delayed completion by several months.

-老约翰·卡尔森. Vice President and Strategic Business Director, 百乐博app 运输 Group

2013年5月, the first completed arch was loaded onto two self-propelled modular transport trailers and slowly driven the four blocks from the casting yard and across the old bridge. 在这里, twin Liebherr 1400 cranes lifted and set it into place on new foundations located alongside the original structure.

其余的拱位在30天内完成, 主要是在晚上,尽量减少交通中断. 一旦所有的拱门都被放置, the team closed and demolished the old bridge and constructed the new one in its footprint. 根据约翰, "根据预制构件的尺寸和形状, 后张拱门, 世界上再也找不到像它这样的桥了.” The West 7th 街大桥 re-opened to traffic just 120 days later, 比原计划早了一个月.

construction of Ft Worth 7th 街大桥 shows cranes setting precast concrete and steel arches

有开创性和获奖项目, our work in 德州 has played a key role in making 百乐博app a top contractor, 一直在ENR德克萨斯州排名 & Louisiana’s Top Contractors list and winning multiple Best Project honors. 百乐博app’s most recent award-winning projects in 德州 include the recently completed 灯塔娱乐中心 阿灵顿 圣佩德罗溪文化公园 在圣安东尼奥,还有 GO 10高速公路重建 在埃尔帕索.