阿米伦密苏里州巴格内尔大坝稳定项目
Lake of the Ozarks, Mo.
BEST PROJECT and Award of Merit, Safety
Owner:Ameren Missouri
Lead Design Firm:Rizzo Associates
General Contractor:MC Industrial, a McCarthy Holdings Co.
土木工程师：Brayman Construction Corp.
水电拆除:Rampart Hydro Services LP
Concrete Placement:ACI Concrete Placement
The Bagnell Dam created the Lake of the Ozarks in Missouri after it was completed in 1931. The 2,453-ft-long, 148-ft-tall gravity dam holds back 600 billion gallons of water from the Osage River. In recent years, major dams such as the Oroville in California have failed, and smaller bridges and dams have been wiped away by rain and snow in increasingly wet Midwestern winters and springs. Dam owner Ameren Missouri decided to invest in reinforcement and fortification before nature threatened. In 2017, MC Industrial and Brayman Construction began work on the $52-million stabilization project that would eventually give Bagnell’s east section six new anchors, the west section 28 anchors and the spillway 33, each with 2 million lb of holdback capacity. A total of 17,000 cu yd of concrete on the downstream side of the dam had to be removed and replaced, all within an 18-month construction schedule.
“这是公司的风险决定，” Ameren水电运营总监Warren Witt说，该公司还拥有Hydro Power生产Osage Energy Center。“除了显然将水供电以成为发电厂外，这个大坝还为密苏里州创造了十亿美元的旅游业。如果这个大坝要降低，我们的发电不仅会使旅游业，房地产市场，成千上万的房屋以及这里的其他所有东西都处于危险之中。”
To deliver on Ameren’s timeline, MC Industrial used a concrete scrubbing robot; a color-coded project tracker tool that let all stakeholders know what state each anchor and section were in during replacement; and a movable scaffold that acted as its own concrete form. The new concrete added to the dam weighed 66 million lb.
“[Project Tracker] ensured that we had the best knowledge of our project at the time and applied it to the goals of our clients and our partners,” says Mike Hartwig, MC Industrial’s project manager. “Technology is obviously changing all the time, and we leverage our own in-house technology, plus some outside technologies, to make sure that our controls and our tracking are on the cutting edge.”
Data from the project also allowed safety patterns to be identified and assessed, helping the complex project—which had most of its work done on scaffolds and cranes on barges—to be completed with zero recordable safety incidents.
Hydro拆除承包商Rampart Hydro Services提供的机器人从东部，西部和溢洪道部分删除了3英寸磨损的混凝土。得益于所有者和承包商之间的密切合作，Bagnell大坝的稳定稳定在2018年8月和2019年雨季冬季之前完成了，这在爱荷华州，伊利诺伊州，内布拉斯加州和密苏里州其他地区发生了洪水。
Back to "35 Best Projects Showcase Midwest Design, Construction Innovation"
