Reinforcement Cage Fabrication Fabrication Methods According to the "Highway Engineering Quality Inspection and Evaluation Standards," the allowable deviations for reinforcement cage fabrication are: Item Description Allowable Deviation (mm) 1 Main…
Introduction Pile foundations serve as a common foundation solution for bridge engineering, particularly in areas with poor soil conditions. They transfer structural loads to deeper, more competent soil layers or…
Introduction The HUW Method (H Steel U Steel Continuous Wall) is an innovative foundation pit support technology that serves as an efficient alternative to traditional methods such as Larsen steel sheet piles, SMW…
Introduction Pile foundations have evolved significantly in construction technology. Traditionally, precast piles dominated the market, including reinforced concrete square piles, prestressed concrete piles, and steel pipe piles, with some prestressed…
Purpose of Pile Foundation Testing Single Pile Vertical Compression Static Load Test: Determines the ultimate vertical compressive bearing capacity of a single pile and verifies whether the vertical compressive capacity…
Introduction Rotary drilling piles are increasingly used in urban deep foundation pit support construction due to their advantages of fast construction speed, high precision, low noise, environmental friendliness, and convenient…
Pre-Construction Preparations 1. Technical Documentation Preparation Geotechnical investigation report for soft soil foundation Soil test reports Cement mixing pile design layout drawings (including original ground elevation and reinforcement depth) Survey…
1. Construction Preparation 1.1 Work Preparation Ensure all above-ground and underground obstacles are cleared, achieving "Three Supplies and One Leveling" (water, electricity, road access, and leveled ground). Temporary construction facilities…
Introduction Expanded base piles are a type of cast-in-place pile designed to enhance single-pile bearing capacity by enlarging the pile tip or shaft, thereby increasing end-bearing resistance and side friction.…
Introduction to Pile Foundations 1. Basic Concepts of Pile Foundations Pile foundations represent one of the most widely used deep foundation systems in construction. They consist of multiple piles driven…
Introduction During pile foundation construction, defective piles may occur due to geographical conditions, mechanical equipment, or human factors. Once defects appear, different treatment methods are applied based on severity. The…
Introduction to Rock Socketed Piles Rock socketed piles are commonly installed using impact drilling methods. However, due to practical construction limitations, as well as environmental and civil engineering requirements, impact…
