in soft soil areas, equal-length piles are often adopted in the retaining system. a decrease in the bending moment value borne by the retaining structure along the pile depth (below the excavation bottom), leads to an inadequate use of the pile bending capacity near the pile bottom. this paper presents retaining systems with long and short pile combinations, in which the long piles ensure integ...

Three-dimensional model is established with finite difference method to simulate construction process based on design and construction plans of existing overpass pile foundation adjacent to certain large-section railway tunnel in Chengdu, China. Ground, isolation pile, main bridge pier and ramp pile near the tunnel are taken as research object, and surface settlement amount, displacement change...

When a construction company builds a high structure, many piles should be driven into the ground by a hammer whose weight is 7,000 Kg in order to make the ground under the structure safe and strong. So, it is essential to determine whether a pile is penetrated into the ground enough to support the weight of the structure since ground characteristics at different locations are different each oth...

Abstract A new system of multiple dynamic strain sensors and accelerometers embedded in test piles provides direct synchronous measurement of force and acceleration at various locations within a pile during high strain dynamic pile testing. This instrumentation system creates an opportunity to explore side and end bearing pile resistance distribution with a higher level of confidence and reliab...

Abstract Modelling of early curing stage a bridge pier foundation pile cap 4.5m thick, to be constructed at Betong division, Sarawak was carried out verify scheme water-cooling pipe can meet temperature specifications in which concrete must not reach peak 70°C, and differential core surface exceed 25°C. using transient heat transfer finite element analysis programme by treating the as solid bod...

Laboratory measurements were undertaken to investigate wave and current velocities in the vicinity of a wind turbine monopile foundation, in order to inform environmental impact assessments and to quantify flow variability in the region of the power take off cable. Flow measurements were made up to 15.5 pile diameters (D) downstream of the pile. Measurements were also taken around the perimeter...

Abstract Micro pile hole is a kind of bored with diameter 100~400mm, which has been widely used in the field transmission line engineering recent years, and its formation usually uses DTH (Down-the-Hole) drilling rig. When rigs operate, slag discharge method to use compressed air provided by compressor blow muck directly from bottom ground. However, during process, it difficult out due large cr...

Grouped and single pile behavior differs owing to the impacts of the pile-to-pile interaction. Ultimate lateral resistance and lateral subgrade modulus within a pile group are known as the key parameters in the soil-pile interaction phenomenon. In this study, a series of experimental investigation was carried out on single and group pile subjected to monotonic lateral loadings. Experimental inv...

Abstract Recently pneumatic-driven soft robots have been widely developed. Usually, the operating principle of this robot is inflation and deflation elastic inflatable chambers by air pressure. Some need rapid periodic their to generate continuous motion such as progress or rotational motion. However, if needs operate far from pressure source, long tubes are required supply its chambers. As a r...

Several authors have written papers dealing with a class of combinatorial games consisting of one-pile and two-pile counter pickup games for which the maximum number of counters that can be removed on each move changes during the play of the game. See Holshouser [8],[7], and Flanigan [4]. The maximum number of counters that can be removed can depend upon a number of factors including the number...