A method for improving the main girder of the reaction force device

Abstract

The invention discloses a reaction device main girder improving method. The method comprises the following four measures that the practice that during hoisting, a steel plate needs to be mounted on a jack is changed into the practice that the steel plate is directly welded to the bottom of a main girder; although previously the main girder is free of any groove, rectangular grooves adapting to balancing weights with different weights are formed in the upper portion of the main girder; although previously the main girder is free of any groove, annular grooves adapting to fixing of hoisting ropes during hoisting are formed in the two ends of the main girder; and as an improvement, after being mounted, the jack and the main girder are connected by directly placing heel blocks. According to the method provided by the invention, the situation that the height problem of a tested pile head affects the mounting efficiency is reduced; the main girder is reinforced to a certain extent, and deformation of the main girder in the using process is reduced; operation is convenient and flexible, and tedious operations caused when the heel blocks are additionally arranged are decreased; and the situation that during mounting and testing, the steel plate topples, and certain safety problems are caused is avoided, accordingly minor pressure regulation is facilitated, measuring is more efficient and more accurate, the main girder is convenient to hoist, and convenience and high efficiency are achieved.

Description

Technical field [0001] The invention relates to the field of building single pile foundation detection, in particular to a method for improving the main beam of a reaction device. Background technique [0002] With the development of the construction industry, the characteristic load of a single pile of building pile foundations is getting higher and higher. The detection of piles is an indispensable part of the construction. The vertical compression test of the piles usually adopts the load device of the pile platform And the anchor pile reaction beam load device to complete. The stacking platform loading device uses formed weights, concrete blocks, reinforced concrete members and other heavy objects as stacking weights. Large size, heavy weight, high transportation and installation costs. The anchor pile reaction beam loading device is a rigid frame body composed of an anchor pile and a reaction beam, and a jack acts between the test pile and the reaction beam. The number of...

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Problems solved by technology

[0004] The invention provides a method for improving the main girder of the reaction force device, which reduces the influence of the height of the pile head under inspection on the installation efficiency; has a certain reinforcing effect on the main girder, reduces the deformation of the main girder during use; is convenient and flexible, reduces the increase in The cumbersome operation of pads; to avoid certain safety problems caused by the steel plate toppling during the installation and experiment process, it is convenient to determine the weight of the counterweight according to the load requirements of the tested piles, and then it is convenient to adjust the pressure in a small range, making the measurement more accurate. Efficient and more accurate, convenient for hoisting of the main girder, convenient and efficient, and can effectively solve the problems in the above-mentioned background technology

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