纳什维尔机场的$ 1.4B改建命中率正确|2022-01-13 |工程新闻记录

纳什维尔的专业音乐制造商知道将混乱的泥泞变成流动的和声需要什么。但是，即使他们也可能会从BNA Vision中学到一些有关同步性的知识，BNA Vision是音乐城国际机场正在进行的14亿美元扩展计划。

以纳什维尔机场法规命名，债券资助的航站楼，车库和其他设施项目的收集旨在容纳持续的两位数乘客量趋势，这只会因冠状病毒大流行而短暂地阻碍。新利18备用网址7月，该病毒几乎在全国范围内扎根的14个月，BNA的平均出发次数飙升了2019年的水平，每天有25,000多名乘客登上出站航班。

将16个弯曲的脊柱桁架之一放在空中冠层上，该窗帘将从末端车库1延伸到国际到达设施的主要通道。
Matt Good的照片

Traci Holton, vice president for engineering and deputy chief operating officer for the Metropolitan Nashville Airport Authority (MNAA), says that BNA Vision’s original intent was to accommodate the airport’s growth trajectory through 2041.

霍尔顿认识到需要到2023年需要新设施，因此补充说：“我们必须加速事物。”

To fast-forward the complex projects by nearly two decades, MNAA adopted progressive design-build delivery, “making each project a building block for another,” Holton says.

例如，BNA Vision的一个早期项目之一将现有的主要终端机翼延长了200,新利18备用网址000平方英尺，用于新的票务和行李索赔空间，并创建了115,000平方英尺的六门大厅D。

气球最长的桁架长179英尺，重281,000磅。24个十字形柱支撑桁架，悬挂在越过下方的道路的198英尺长的行人桥悬挂下来。
Matt Good的照片

The three-year effort, led by Hensel Phelps and Fentress Architects and completed in July 2020, allowed BNA’s terminal to be split in two, clearing the building’s central core for the program’s largest component—a $327-million, 440,000-sq-ft multifaceted project that renovates existing space into a marketplace with retail, dining and service amenities and expanded security screening operations. The project also expands the terminal with a new six-gate international arrivals facility (IAF) that will also contain a larger Customs and Border Protection (CBP) processing area.

Hensel Phelps的项目经理Callie Hepler再次与Fentress合作，为中央航站楼/IAF项目合作，他解释说，新的大厅释放了足够的空间，可以使终端建筑活动进行进行，而无需减少大门的整体数量。尽管如此，事实证明，最大程度地减少对机场运营的影响还是复杂计划中的一种练习。

码头车库1将配有行人广场和两级72,000平方英尺的机场行政中心。
照片礼貌的梅塞尔建筑

赫普勒说：“必须考虑影响乘客体验的一切。”“这包括从临时搬迁租车柜台到安装八个自动扶梯以保持垂直循环的所有内容，同时进行了垂直循环。”

IAF的建设始于去年秋天，在隔壁的停机坪交通中安全围起来。Hensel Phelps从180英尺深的挖掘中挖掘了大约40,000立方英尺的岩石，并由180名士兵桩支撑。随着IAF的结构四级钢制框架现在从296个深基础上升起，平均长度为25.7英尺，拆除市场翻新的拆除开始了。

Overlooking the airfield, the expansive marketplace atrium and IAF will be clad with metal panels and electrochromic glazing that allows the airport to adjust the exterior’s color with time of day and outside lighting conditions. Both projects are set to wrap up by the end of 2023.

该项目包括将现有空间翻新到具有零售，用餐和服务设施的市场，并扩大安全筛查操作。
照片礼貌的梅塞尔建筑

A construction-style jam session

Meanwhile, a similar “building block” strategy was being applied to expand BNA’s parking facilities, beginning with a six-level, 2,200-space structure completed by JE Dunn in 2018. Eighteen months later, Messer Construction Co. completed a companion cast-in-place post-tensioned structure called Terminal Garage 1 and designed by Moody Nolan. Located directly across from the terminal, the $183-million building provides 3,000 spaces and a double-helix ramp on four levels and is topped with a pedestrian plaza and BNA’s two-level, 72,000-sq-ft administrative center.

梅塞尔运营副总裁杰夫·班塔（Jeff Banta）解释说，将车库遵守尤其至关重要，因为该航站楼的现有行政办公空间将成为新市场地区的一部分。一整天的拆除工作清除了建筑工地的一个较旧的三级车库，然后开挖了50,000立方英尺的岩石。在切割的一部分中，梅塞尔带来了岩石锤，以达到所需的12英尺深的粉底垫水平。

终端通道had to be closed and traffic rerouted on six nights to place steel for the Airwave canopy.
Matt Good的照片

班塔补充说：“我们在混凝土上也非常积极，构架和平均每周使用33,000平方英尺的时间使用五次倒入和多个船员。”他认为，纳什维尔（Nashville）的宪章建设所做的努力，称该项目的交钥匙混凝土子sub“是完成工作并按时保持工作的组成部分。”

梅塞尔集团现在正在研究建立终端车库1’s $82-million second phase, a project that adds yet another dimension to the BNA Vision program. Along with adding another 2,800 spaces, the parking structure will be topped with a new 10-story, 292-hotel being developed with Chartwell Hospitality as a public-private partnership. Messer and Chartwell’s general contractor, Crain Construction, are using 3D modeling to coordinate elements such as elevator shaft size and location, Banta says. As with the terminal and IAF, the garage and hotel are scheduled to be complete in late 2023.

让所有者提早参与协调现场物流以及...讨论计划都非常有帮助。”
- Hensel Phelps Construction项目经理Callie Hepler

BNA Vision确保无缝机场运营的目标的最大挑战可能是Airwave建造，这是一个156,000平方英尺的钢制冠层，最终将从码头1号车库1延伸到IAF尽头的主要通道。

该结构是由Fentress设计的，桥接建筑师Corgan和结构工程师Magnusson Klemencic Associates设计的，结合了16个弯曲的脊柱桁架，其长度不同，最长的是179英尺长的元素，重量超过281,000磅。- 英尺长的屋顶十字形柱支撑着桁架，悬挂在198英尺长的行人桥上，将车库与末端前庭连接起来。

Hoisting the Airwave’s massive elements required Hensel Phelps to enlist a Demag CC 8800 crane, “one of the very few machines in the world that had the lifting and reach capacity we needed,” Hepler says. Each pick required precise positioning of both the crane and the steel element, which took a months-long planning effort that was further complicated when hoisting activity required closure of the terminal’s sole access road.

Hensel Phelps and MNAA scheduled six nights when the road could be shut down completely for up to eight hours while terminal traffic was rerouted through the garages. A team of 65 MNAA staff volunteers were on hand to assist motorists and put a public face on what might otherwise have been a frustrating experience for airport users.

迄今为止，已经设置了三分之二的屋顶，其余部分将在2022年初的IAF上登上。

“The coordination work really paid off,” Hepler adds.

良好的沟通有助于按计划保持项目的许多相互关联。
Photo courtesy metropolitan Nashville Airport Authority

Instant improvisation

One facet of BNA Vision that defied even the most prescient planning was the pandemic and its effects on safety, scheduling and supplies.

“COVID hit at homestretch for the garage,” Banta says. “We never stopped work, though any positive tests required pauses to make sure everyone was safe.”

尽管这些项目已经导航新利18备用网址了紧张的供应链，但供应商的最后一分钟无法为终端和车库外墙提供预制的Terra-Cotta面板，这迫使葡萄牙的替代来源很快。

班塔说：“没有其他供应问题，但是我们正在为车库的第二阶段进行更积极的订购。”

Hepler says communication has proven fundamental to keeping BNA Vision’s interrelated moving parts on schedule. Co-locating contractors with MNAA’s engineering staff and weekly multiproject coordination meetings has kept everyone engaged and accessible with each other.