周二, 3月2日, Civiltech公司的Rockland公路改善项目被授予APWA年度最佳湖泊支线项目(500万至2500万美元). 这个项目是由我们的客户指定的, 利伯蒂维尔村和利伯蒂维尔乡路区.

一个基于合作的项目

通过协作和协调, the Village and 乡镇 teamed up to undertake a substantial and critical corridor improvement. 他们一起工作,重建了.在IL 21号公路(密尔沃基大道)和St. 玛丽的道路. 德斯普兰斯河大约位于项目的中点, 西为村辖区,东为乡辖区. 由于管辖范围不同,该项目被分成两份合同. 然而,走廊的长度是作为一个项目来协调和管理的.

村、乡认真协作, 结合战略调度, 将这一重大改善对驾驶公众的影响降至最低. Construction coordination and careful timing of the complex construction operations were critical. 在整个走廊进行道路建设之前,需要进行大量的地下公用设施的改善,因此,村庄一侧的改善工程首先被出让. Traffic control throughout all construction activities the length of the improvement needed to be treated as one project.

民用技术公司提供了第一阶段的研究, 二期设计工程, and Phase III 建筑工程 on the project and helped both agencies secure STP funding. 桥的重建不包括在内, 但现在是一项独立的第一阶段研究,目前由民用科技公司进行.

罗克兰路是一条两车道的主要收集街,大约有6个,每天000辆汽车,并在东西两个终点站的交叉路口设置信号. 这个村庄 jurisdiction is an urban cross-section with curb and gutter and an enclosed drainage system. 在过去的几十年里,重新铺设工程导致混凝土排水沟只剩下一两英寸的路缘高度. 因此, the roadway was reconstructed in place as the pavement had reached the end of its design life. 该项目包括一条新的暴雨下水道干线,以排水道路,并为项目西端的住宅雨水泛滥问题提供缓解. 在设计过程中,该村完成了一项洪水救济研究,建议将48条泄洪渠扩大到84条,泄洪渠流入德斯普兰斯河. 此外,该项目还更换了一条老化的水管干线.

镇管辖范围内, 现有的道路是一个树木成行的24英尺的铺有路面的乡村横截面,由开放的沟渠和洼地排水,这些沟渠和洼地也已经达到了设计寿命的尽头. The Phase I study identified a need for improved pedestrian and bicycle facilities to provide access to the Des Plaines River Trail. 因此, 乡镇 chose to include 2-foot paved shoulders as part of the proposed improvement.

这些项目实现了所有预期目标,为驾车者和行人提供了一条安全的新道路. The risk of reoccurring flooding that was previously experienced within the adjacent neighborhoods has been significantly reduced, 因为径流现在有能力通过巨大的新排水系统,然后最终以缓慢而清洁的河流分散到德斯普兰斯河.

关键施工管理技术

在两个司法管辖区和两个独立的主承包商的配合下,在项目村庄一侧的洛克兰路中心安装一个巨大的84英寸直径的暴雨污水管,提出了独特的挑战,需要杰出的施工管理技术. Civiltech assigned a senior Resident Engineer to provide overall communication and coordination between the two projects. 然后,两名助理驻地工程师分别被分配到不同的项目. This creative approach ensured that both projects were completed on schedule since potential conflicts were carefully coordinated. 也, this unifying tactic successfully managed the following unique and significant construction challenges:

协调承包商:工程涉及两家独立的主承建商及交通管制分判商. 两个项目同时在建, DET365中文网站必须像两个独立的合同是一个单独的项目一样工作.

维护交通交通管制是至关重要的,不仅要确保交通安全通过村庄一侧的大挖掘周围的狭小空间,并维持一个安全的工作区, 但为了确保交通活动和绕道是协调的,并使走廊的长度在两个司法管辖区都有意义. Timing was everything when it came to ensuring that both contractors completed their work in each MOT stage prior to switching.

关键利益相关者协调R:.E.’s had to coordinate with natural gas main relocation contractors along the corridor to avoid potential conflicts. 也, 由于大量的挖掘需求, 业主受到很大影响,需要积极沟通和及时通知.

在改善工程的村庄一侧,一个主要的施工管理挑战是在安装84英寸雨污水管所需的深基坑中管理“流沙”状况. 离德斯普兰斯河很近, 高水位, 一种含多孔砂的土壤, 以及极深的挖掘要求, 水注入坑道的速度比抽出的速度要快.

让建设向前推进, cofferdams had to be built across the excavation allowing areas to be pumped dry enough to provide a section for pipe placement. 然后围堰必须沿着新的雨水管安装线快速向前移动,在一个阶段的施工顺序与泵沿围堰后面. 这项技术必须仔细协调,以控制大量的进砂水,并保持项目的进展.

施工期间的安全方案

The location of this project adjacent to the Des Plaines River created unique situations requiring carefully planned safety programs.

桥上行人通道:这座桥, 穿过德斯普兰斯河,连接两个路段, had required modification prior to the Rockland Road work due to structural conditions that had become unsafe. A truss had been erected over the bridge many years ago that did not provide any support to the roadway, 但是包括了支撑人行道的结构. 桁架必须被拆除,这使得桥上没有行人设施. While the bridge connected the two legs of Rockland Road and all associated pedestrian and bicycle travel, 它还提供了通往河乡一侧的德斯普兰斯河小道的通道. 因此, a safe pedestrian facility had to be added to the bridge and maintained through construction and beyond. To accomplish this, temporary barrier walls were installed on the bridge to create a walking path.

做好发掘如前一节所述, “流沙”是84英寸的暴雨污水管道安装和相关连接室所需的大型挖掘的一个重大挑战. 管理围堰, 泵, 挖掘工作, 和建设工作, braced excavations had to not only be appropriately substantial but also strong enough to acquire the needed depth. Cave-ins were a potential danger which could affect worker’s safety and neighboring property damage. The bracing had be designed and the activity coordinated such that they could be quickly and safely installed, 搬迁, 和删除.

COVID-19安全:以建筑活动为主要业务, construction of these projects progressed through the spring and summer of COVID restrictions. 正是因为, 乡镇, 和Civiltech为现场工作人员采取了积极主动的新冠肺炎安全预防措施. 参与该项目的机构工作人员和RE人员努力确保尽管项目工作人员众多,但仍能保持社交距离. 民用技术公司提供了个人防护设备(PPE),他们的员工利用他们的个人车辆作为施工现场的办公室. Rockland Road项目完成后没有出现任何新冠肺炎病例.

社区关系

Community relations were a critical component of Civiltech’s 建筑工程 services. 在乡村这一边, 为了安装新的84英寸的下水道,需要进行大规模的挖掘工作,这给项目沿线的业主带来了极大的不便. 当卫生下水道和水管工作还在进行时,房主的车道可能会被堵塞长达3周之久. Planning involved providing parking locations for the displaced homeowners and the installation of temporary sidewalks. 除了房主, 一个大型的商业园区位于项目范围内, 他们的关键入口就在桥附近. 沟通和协调对他们的业务运作至关重要.

此外,社区对这个项目也有很多关注. 这个村庄, 乡, and Civiltech together had hosted a number of public meetings during Phase I where these concerns had been communicated. The topics of the meetings not only regarded the inconveniences during the actual construction, 还包括拟议的排水改善的规模和未来的计划. 罗克兰DET365中文网站积极主动地参与社区关系. 建立了一个项目网站,代表这两个项目. Not only did the site provide construction updates and scheduling information for the public, 但它允许社区成员提问和表达担忧. 民用科技没有让这些问题和担忧在网站上消失, 但要确保所有的评论和问题都得到了处理和回答.

除了网站, Civiltech’s Resident Engineer’s took a very hands-on approach to direct communication with the neighbors. R.E.’s proactively ensured that neighbors were aware of forthcoming impacts to their property, and the R.E.他们可以直接回答邻居的问题. 这使得向自由城和市镇提出的问题减少了.

保护环境

由于这些项目临近德斯普兰斯河,对德斯普兰斯河的影响以及正在进行的工作类型,这些项目涉及大量的环境考虑. 与任何邻近水道的工程一样, 减少干扰和防止侵蚀是至关重要的. Civiltech的河流保护计划是二期工程设计的一部分,同时也由我们的驻地工程师管理.

为了减轻干扰, areas affected by construction were immediately repaired with seeding or plantings to prevent erosion. 另外, erosion dams were installed during work on the storm sewer to protect the river.

另一个挑战是暴雨下水道挖掘中的抽水活动. 因为沙子浸透了底土, water that was intended to be pumped from the excavations and returned to the river contained excessive amounts of silt. 为了减轻这种, the water was pumped through silt bags to capture the silt prior to the water returning to the river. 也, the silt infused water was pumped through a fluid diversion mechanism attached in line with the piping, 哪一种采用聚合物来降低浊度和改善水质. 为确保措施的适当和有效提供指导, 民用技术与湖县雨水管理委员会协调.

逆境下的成就

这个项目在不利条件下取得了很多不寻常的成就. 不利条件下, 包括现场条件, 土壤条件, 恶劣天气, 现有的公用设施位置需要项目DET365中文网站的创造性解决方案.

地下水位位于84英寸的暴雨污水管道的倒立高度,造成了上面描述的流沙状况. 采用了深井旁通泵作业,以便将大型管道和配套结构安装在稳定的基础上. 另外, 由于德斯普兰斯河的海拔高度超过了大多数降雨事件的倒置海拔,雨水下水道的安装和抽水作业变得具有挑战性. The 泵 operations and staging of the protective coffered dams allowed the project to proceed despite these adverse conditions.

现有的卫生下水道和住宅用水管道沿着项目的村庄部分穿过街道,垂直于新雨水管道的设计布局. 有直径84英寸的下水道, 至关重要的是,要确保卫生管道能够穿过新的暴雨下水道,卫生主干不会被破坏或倒塌.

Precast concrete junction chambers were installed with each chamber weighing approximately 100,000磅. 连接室由一个48英尺长,10英尺x 4英尺的箱形涵洞连接. The culvert allowed the flow between the new 84″ diameter storm sewer pipes to run under conflicting sanitary sewer.

使用替代材料,实践或资金,并承诺可持续性

该项目由联邦、汽车燃油税和地方基金共同资助. 当地的资金包括扩建暴雨下水道的资金. 这一关键的暴雨下水道管理包括新的大型暴雨下水道和通过新安装的管道系统移动雨水, 而不是直接冲进河里, 不仅缓解了当地的洪水, 但可以减轻下游的进一步影响.