A testing method for vertical bearing capacity of side piles

Abstract

The invention provides a side pile vertical bearing capacity detecting method. The side pile vertical bearing capacity detecting method comprises the following steps that firstly, a land is smoothed, a balance system is arranged on the side, opposite to an excavation slope, of a detection pile, the balance system comprises a supporting mechanism and a leveling mechanism arranged at the upper end of the supporting mechanism, counterweight pad feet are arranged on the two sides of a connecting line between the detection pile and the leveling mechanism, and first rigid base plates are laid on the upper ends of the counterweight pad feet; secondly, a first rigid pressing head is laid on the upper end of a pile head of the detection pile, and first jacks are arranged at the upper end of the first rigid pressing head; thirdly, the leveling mechanism comprises a second rigid pressing head and second jacks arranged at the upper end of the second rigid pressing head, and main beams are distributed over the first jacks and the second jacks; fourthly, a plurality of first auxiliary beams are laid over the main beams, the first auxiliary beams are perpendicular to the main beams in the horizontal direction, and the two ends of each first auxiliary beam are arranged at the upper ends of the two first rigid base plates; fifthly, counter weight is arranged over the auxiliary beams in a stacking manner; and sixthly, a hydraulic device and a data collecting device are connected.

Description

technical field [0001] The invention relates to the field of construction engineering, in particular to a method for detecting the vertical bearing capacity of side piles. Background technique [0002] In the field of foundation pile detection in construction engineering, the traditional stacking method is a commonly used method for the vertical bearing capacity test of a single pile. Above the test pile, with the center point of the pile as the center, a ballast platform is set up, and the ballast platform passes through the secondary beam to the main beam. Transfer the load, and then provide the reaction force from the main beam to the static load test of the foundation pile. It usually consists of buttresses, pier backing plates, rigid pressure heads, main beams, auxiliary beams, distribution beams, counterweights, etc. The traditional stacking method emphasizes that the center of gravity of the stacking platform must coincide with the centerline of the detection pile, s...

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Problems solved by technology

The static load test of the side pile is limited by the site, and the traditional surcharge method cannot effectively test the bearing capacity of the side pile. For a cast-in-place pile with a pile diameter of 1000mm, the design bearing capacity is 5000kN, the maximum test load value is 10000kN, and the maximum surcharge capacity is 12000kN , the net distance between the side piles and the slope toe of the foundation pit is 2m, and the site plane space of the traditional surcharge method is 10m×10m. The site conditions of this project cannot meet the test requirements of the traditional surcharge method, so it is impossible to complete the load bearing of the side piles. force detection

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