Construction Technologies for Sewer Rehabilitation

Reyna, Santiago; Vanegas, Jorge A.; Khan, Abdul Hye

doi:10.1061/(asce)0733-9364(1994)120:3(467)

Cited by 14 publications

(4 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Over the years, several studies on pipe replacement have been carried out to achieve optimal rehabilitations of defective sewer networks in order to prevent floods and environmental threat while minimizing investments costs. Reyna et al [11] have proposed some solutions to the challenges which are encountered in the process of finding new strategies for sewer network rehabilitation methodologies which seek to maintain the cost-effectiveness. Abraham et al [12] proposed an integrated management methodology considering Markovian probability-based models combined with deterministic models to predict structural failures in sewer networks.…”

Section: Introductionmentioning

confidence: 99%

Multi-Objective Optimization for Urban Drainage or Sewer Networks Rehabilitation through Pipes Substitution and Storage Tanks Installation

Ngamalieu-Nengoue

Martínez-Solano

Iglesias-Rey

et al. 2019

Water

View full text Add to dashboard Cite

Drainage networks are civil constructions which do not generally attract the attention of decision-makers. However, they are of crucial importance for cities; this can be seen when a city faces floods resulting in extensive and expensive damage. The increase of rain intensity due to climate change may cause deficiencies in drainage networks built for certain defined flows which are incapable of coping with sudden increases, leading to floods. This problem can be solved using different strategies; one is the adaptation of the network through rehabilitation. A way to adapt the traditional network approach consists of substituting some pipes for others with greater diameters. More recently, the installation of storm tanks makes it possible to temporarily store excess water. Either of these solutions can be expensive, and an economic analysis must be done. Recent studies have related flooding with damage costs. In this work, a novel solution combining both approaches (pipes and tanks) is studied. A multi-objective optimization algorithm based on the NSGA-II is proposed for the rehabilitation of urban drainage networks through the substitution of pipes and the installation of storage tanks. Installation costs will be offset by damage costs associated with flooding. As a result, a set of optimal solutions that can be implemented based on the objectives to be achieved by municipalities or decisions makers. The methodology is finally applied to a real network located in the city of Bogotá, Colombia.

show abstract

Section: Introductionmentioning

confidence: 99%

Multi-Objective Optimization for Urban Drainage or Sewer Networks Rehabilitation through Pipes Substitution and Storage Tanks Installation

Ngamalieu-Nengoue

Martínez-Solano

Iglesias-Rey

et al. 2019

Water

View full text Add to dashboard Cite

show abstract

“…Reyna et al (1994), Zhao (1997), Abraham and Gillani (1999) and Hoffman (2000) proposed new methods for sewer rehabilitation and analyzed the effects of their methods on the determination of the rehabilitation priority. Based on Brousseau's (1997) survey of the rehabilitation methods of sewer systems and definition of I/I, Belhadj et al (1995) estimated I/I by developing a model to forecast I/I in an urban area taking into account the rainfall intensity and duration.…”

Section: Previous Studies Associated With the Sewer Rehabilitationmentioning

confidence: 99%

Development of a Decision Making Support System for Efficient Rehabilitation of Sewer Systems

Lee¹,

Baek²,

Kim³

et al. 2008

Water Resour Manage

View full text Add to dashboard Cite

The main objective of sewer rehabilitation is to improve its function while eliminating inflow/infiltration (I/I). If we can identify the amount of I/I for an individual pipe, it is possible to find the distribution of the total I/I over the entire sewer system. With this information we identify which sub-area is more critical than others. However, in real, the amount of I/I for an individual pipe is almost impossible to be obtained due to the limitation of cost and time. For this reason, we suggested the rehabilitation weighting model (RWM) to determine it objectively or systematically. Based on the determined amount of I/I for an individual pipe, we also suggested the rehabilitation priority model (RPM), which is equipped with genetic algorithm, to determine the optimal rehabilitation priority (ORP) for sub-areas in term of minimizing the amount of I/I occurring while the rehabilitation process is performed. The benefit obtained by implementing the ORP for rehabilitation of subareas is estimated by the only waste water treatment cost (WWTC) of I/I which 1726 J.H. Lee et al.occurs during the sewer rehabilitation period. A decision making support system which is consisted of the RWM and the RPM was applied to an urban drainage area. The results of the ORP were compared with those of a numerical weighting method (NWM) and the worst order which are other methods to determine the rehabilitation order of sub-areas in field. The ORP reduced the WWTC by 22% compared to the NWM and by 40% compared to the worst order.

show abstract

“…Before the 1960s, inspecting sewer pipelines was a challenging task [5] and access and inspection was difficult due to pipe size. Sewer inspection methods have rapidly advanced with technologies such as visual and infrared cameras, sonar/ultrasonic techniques, sewer scanning and evaluation technology (SSET), laser-based scanning, focused electrode leak location (FELL), and ground penetrating radars (GPR) enhancing inspection approaches.…”

Section: Introductionmentioning

confidence: 99%

Review on Computer Aided Sewer Pipeline Defect Detection and Condition Assessment

2019

View full text Add to dashboard Cite

Physical and operational inspection of sewer pipelines is critical to sustaining an acceptable level of system serviceability. Emerging inspection tools in addition to developments in sensor and lens technologies have facilitated sewer condition assessment and increased the quality and consistency of provided data. Meanwhile, sewer networks are too vast to be adequately investigated manually so the development of innovative computer vision techniques for automation applications has become an interest point of recent studies. This review paper presents the current state of inspection technology practices in sewer pipelines. An overall inspection tool comparison was conducted and the advantages and disadvantages of each method were discussed. This was followed by a comprehensive review of recent studies on visual inspection automation using computer vision and machine learning techniques. Finally, current achievements and limitations of existing automation methods were debated to outline open challenges and future research for both infrastructure management and computer science researchers.

show abstract

Construction Technologies for Sewer Rehabilitation

Cited by 14 publications

References 5 publications

Multi-Objective Optimization for Urban Drainage or Sewer Networks Rehabilitation through Pipes Substitution and Storage Tanks Installation

Multi-Objective Optimization for Urban Drainage or Sewer Networks Rehabilitation through Pipes Substitution and Storage Tanks Installation

Development of a Decision Making Support System for Efficient Rehabilitation of Sewer Systems

Review on Computer Aided Sewer Pipeline Defect Detection and Condition Assessment

Contact Info

Product

Resources

About