Lessons learnt from design and construction of EDF first Piano Key Weirs

Planning, Design and Construction of Elevated Guideway of Kelana Jaya (KLJ LRT) Extension Project and Challenges & Lessons Learnt

IABSE Conference, Kuala Lumpur 2018: Engineering the Developing World ◽

10.2749/kualalumpur.2018.0259 ◽

2018 ◽

Author(s):

Dennis Ganendra ◽

Azmar Bin Embi ◽

Pradip Kumar Biswas

Keyword(s):

Lessons Learnt ◽

Design And Construction

Building a transportation infrastructure for fast growing city like Petaling Jaya (considered twin city with Kuala Lumpur), Malaysia is always challenging and difficult works. One of the major infrastructure projects, the 17 km long elevated guideway which form the extension of Kelana Jaya Light Rail Transit (KLJ LRT) i.e Putra line is opened for service since 30th June 2016. The elevated viaduct was designed to build extensively using precast technique. The time efficient proven technique of span by span precast segmental construction along with some crossings with precast balanced cantilever construction was implemented for the project. Cast-in-situ box girder and precast U-beams with in-situ deck were also used for bifurcation and pocket track areas. Majority of the stations (9 out of 12) for KLJ LRT Extension are island platform stations and this has major impacts on interface in constructions, time and cost. The requirement of island platform station was one of the main criteria for the operator i.e RapidKL which is part of Prasarana.Curved and skewed alignment over major 6 lanes highways and commuter lines necessitates a span as large as 100 m with 3 span balanced cantilever structure. Prestressed pier column were introduced due to space constraint. Precast split segments were also introduced to overcome difficulties in handling and delivery of deeper segments.This paper describes the design scheme and contractual set up of guideway structures and presents an overview of construction and also related issues, incidents etc.

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Development of Detailed Right of Way Quantities and Footprint for Pipelines

ASME 2017 International Pipeline Geotechnical Conference ◽

10.1115/ipg2017-2520 ◽

2017 ◽

Cited By ~ 1

Author(s):

Sherif Soliman ◽

Grenan Mongroo ◽

Carlos Penate ◽

Bahar Farhadi

Keyword(s):

Cross Section ◽

Analytical Methods ◽

Supply And Demand ◽

Mountainous Areas ◽

Construction Planning ◽

Pipeline Construction ◽

Right Of Way ◽

Lessons Learnt ◽

Design And Construction

The design and construction planning of pipelines is a multidisciplinary effort that requires support and input from geotechnical, geomatics and pipeline construction specialists. The cooperation between those disciplines is more pronounced and required when the pipeline traverses rugged mountainous areas with challenging settings. This paper begins by considering the range of topographic, geological, construction and other route datasets and how they are generated. A presentation of an application that has been developed and utilizes progressively improving route datasets as projects advance to generate Right-of-Way (ROW) footprint and detailed construction quantities such as granular excavation volumes, supply and demand quantities and cross-section details is introduced. An overview of construction details including construction direction, seasonality, and ROW profile is then offered. In addition, several analytical methods are available for deployment, each being suited for various stages of a project’s development. These analytical methods include advanced workbooks and GIS Enabled Applications that leverages DTM information as well as commercially available packages. A discussion of these methods is presented together with suggested guidelines as to when to apply them in a proposed project’s phase. Finally, lessons learnt from the experiences gained in several major projects are summarized.

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Lessons Learnt from the Structural Design and Construction of the Lille Langebro, Copenhagen

10.24904/footbridge2022.221 ◽

2021 ◽

Author(s):

Simon Fryer ◽

Thomas Eckhart

Keyword(s):

Structural Design ◽

Complex Geometry ◽

Complex Nature ◽

Level Crossing ◽

Low Level ◽

Moment Connection ◽

Lessons Learnt ◽

Closed Position ◽

Close Cooperation ◽

Design And Construction

The Lille Langebro is a major new pedestrian and cycle bridge over the harbour in Copenhagen. The bridge forms a sleek, low level crossing that curves in plan as well as elevation. The superstructure consists of fabricated steel box sections of complex geometry and includes two balanced double cantilever spans on slew bearings which rotate to allow the passage of large ships. The rotating spans are fixed together in the closed position by an arrangement of proprietary mechanical components which form an innovative structural moment connection at mid-span. The complex nature of the structure presented many challenges to the design and construction that were successfully overcome through close cooperation between the client, designers and contractors. This paper will explain some of these challenges and the lessons that can be learnt for use in future projects.

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