01020209

Component

https://doi.org/10.3141/1928-22

http://scholar.google.com....+Hu&publication_year=2005

The 20-km (12.5-mi) mass rapid transit underground railway system in central Bangkok, Thailand, recently opened for passengers. During construction, the project was divided into two separate civil design–build contracts: the northern section, comprising approximately 10 km (6.2 mi) of twin bored tunnels, and nine stations constructed within slurry walls by adopting top-down techniques. A crucial part of the design of the underground structures was the selection of appropriate design parameters for the slurry walls. The contractor was responsible for ground-related issues and carried out a detailed site investigation to confirm the ground conditions and define soil parameters for the design of the underground structures. The site investigation comprised 40 conventional wash-bored borings and six self-boring pressuremeter tests. This paper describes the site investigation that was carried out for the project and the ground conditions that were encountered, with particular focus on the use of the self-boring pressuremeter to estimate the soil strength, stiffness, and in situ pressure for use in design of the slurry walls. The paper discusses the various methods used to interpret the data and compares the parameters derived from the pressuremeter to those derived from other methods and from back-analysis of the behavior of the wall during construction. It is concluded that in the conditions in Bangkok, the pressuremeter testing provided higher strength and stiffness values than determined from other methods and that these parameters were subsequently borne out by the behavior of the underground structures.

01020206

English

pp 207-217

2005

Transportation Research Record: Journal of the Transportation Research Board

030909402X

Print

Figures (8) ; References (26) ; Tables (1)

Design build; Earth pressure; Pressure gages; Rapid transit; Underground structures

Site investigation; Slurry walls; Soil stiffness; Soil strength

Bangkok (Thailand)

Bridges and other structures; Construction; Highways; Public Transportation

TRIS, TRB, ATRI

Mar 16 2006 11:15AM

• Acousto-Ultrasonic Technology for Nondestructive Evaluation of Concrete Bridge Members Strengthened by Carbon Fiber–Reinforced Polymer
• Alternate Approach to Approximating Deteriorated Steel Beam End Capacity
• Analysis of Tensile Stresses in Transfer Zone of Prestressed Concrete U-Beams
• Assessment and Risk Ranking of Conventionally Reinforced Concrete Bridges for Shear
• Connections Between Simply Supported Concrete Beams Made Continuous: Results of NCHRP Project 12-53
• Design and Field Monitoring of Horizontally Curved Steel Plate Girder Bridge
• Design of Cantilevered Overhead Sign Supports
• Dynamic Field Performance of Glued Laminated Timber Bridges
• Dynamic Test and Analysis of Curved Steel Box Girder Bridges
• Elastomeric Bearings for Steel Trapezoidal Box Girder Bridges
• Evaluation of Steel Girder Bridge Strengthened with Carbon Fiber–Reinforced Polymer Posttension Bars
• Experimental Study on Ultimate Behavior at Negative Moment Regions of Composite Bridges
• Fatigue Strength and Evaluation of Double–Mast Arm Cantilevered Sign Structures
• Live Load Deflection Performance of Glued Laminated Timber Girder Bridges
• Load Rating of Prestressed Concrete Girder Bridges: Comparative Analysis of Load Factor Rating and Load and Resistance Factor Rating
• Methodologies for Evaluation of Effective Slab Width
• Performance of Lightly Confined Reinforced Concrete Columns in Long-Duration Subduction Zone Earthquakes
• Prefabricated Bridge Elements and Systems in Japan and Europe
• Prestress Loss Measurements in Missouri’s First Fully Instrumented High-Performance Concrete Bridge
• Review of Steel Bridges with Fracture-Critical Elements
• Seismic Retrofitting of Outrigger Knee Joints
• Simple Rating System for Identification of Failure-Critical Culverts and Small Structures
• Single-Lane Live Load Distribution Factor for Decked Precast, Prestressed Concrete Girder Bridges
• Stress Crack Resistance of Corrugated High-Density Polyethylene Pipes in Different Test Environments and Temperatures
• The 17th Street Bridge in Atlanta, Georgia: Context-Sensitive Design Process