的 波特兰市 是自行车和行人的天堂吗. 拥有超过 6%的通勤者 每天骑自行车上班，波特兰轻松排名第一，在美国主要城市中比例最高.S. 城市. When the 波特兰 Bureau of Transportation’s studies identified the need for a safe crossing between two of 波特兰’s fastest-growing neighborhoods–Lloyd and Central Eastside–a plan to build a bridge between the areas began.

Blumenauer桥 (originally called Sullivan’s Crossing) will provide this vital access between two growing areas of 波特兰 and a connection to the 城市’s 绿色循环 无论是骑自行车的人还是行人. 一旦规划开始，承包商就需要一个经验丰富、安全第一的项目 重型起重索具公司 安装桥架. ω利记官网app下载 波特兰 重型吊装和索具组 成为了自然的选择.

工程上的巨大提升 & 索具的解决方案

欧米茄利记官网app下载的工程部门于2020年11月底开始规划该项目, 关于改造后的系板钢拱桥的结构资料有限. 在计划发展的早期阶段, 利记app下载的团队确定了几个挑战, beginning with the bridge’s ability–or lack thereof–to support itself at the designated rigging locations. 和另一家工程公司一起做这个项目, the team devised an effective solution to stiffen the bridge in key areas by welding collars to the upper tube, 允许结构被安全地操纵和放置. 另外, the uneven ground and uphill path created the potential for the necessary gantry system to tip at the base.

通过安装旋转倾斜帽到利记app下载的附着点和转盘到SPMT, we enabled the bridge to rotate as our heavy rigging crew moved south to north on the fixed gantry system.

经过几个月的计划，当利记app下载 重吊和索具 小组得知了桥梁的最终重量——560,000磅, 13,比原先预计的重了1000磅——他们重新开始设计. 为了适应增加的重量, OM engineers added two cranes to the plan–one in the initial phase to move the bridge onto the gantry system, 还有一台100吨的起重机来辅助550吨的起重机来完成最后一套. 工程团队还决定将桥设置在北端, 怎样才能让设备运输人员从东到西利记官网app下载，以确保最终安置.

最终工程计划的制定一直持续到2021年10月初, 仅在预定安装前几天, 到最后, 欧米茄利记官网app下载的工程团队完成了超过885个小时的工作. 总共, 团队充实了8个不同的迭代, 确保他们没有遗漏任何细节.

按时完成繁重的工作

的 bridge crosses I-84–a major highway through the 城市–which needed to be cleared and blocked before work could commence, 但只能在周末关闭. 因此，整个计划的执行被限制在仅仅55个小时之内. 高速公路在凌晨一点的时候畅通了.m. 在周六, OM的重型吊装和索具船员, 由两组每班10名吊具工组成，三名吊车工昼夜不停地工作, 开始工作.

利记app下载首先将桥顶到正确的高度，在第一个位置安装SPMT. 的 next step involved rigging and lifting the 276′ long by 24′ wide bridge with two 550-ton cranes before lifting with a sharing triangle to our first location. Our plan continued by rigging one 550-ton and one 360-ton crane together with the triangle and one 550-ton crane at the other end, with all three cranes moving the bridge together while being propelled with the SPMT out to the 550-ton gantry. 在完成这一阶段后, 在最后推过高速公路之前，团队将SPMT移到了桥的另一端. 的 last move required our 550-ton crane to relocate and re-rig with the 100-ton crane to final set the south end of the bridge.

到下午4点.m. 周日, 欧米茄利记官网app下载成功地安装了布鲁门诺尔桥的主要部分, 利记app下载的起重和索具人员出发了, leaving plenty of time for the contractors to make any necessary repairs to the highway and finish bonding the bridge to the temporary tower. Our client was delighted with the project’s timely completion and ω利记官网app下载 highly professional team. We are proud to be a part of installing this exciting addition to 波特兰’s pedestrian-friendly infrastructure.