SU1677180A1 - Method of manufacturing reinforced cast-in-place pile - Google Patents

Abstract

The invention relates to the construction, in particular to methods for the production of ramming piles. The aim of the invention is to eliminate the collapse of the borehole walls in the manufacture of piles in poorly stable soils. The method includes immersion in the weakly stable soil 1 of the reinforcement cage 2, the formation of a well 6 inside it by tamping down the weakly stable soil with the subsequent filling of the well with the material of the trunk, for example, a semi-dry concrete mixture 8. 1 h. the item of f-ly, 7 ill.

Description

FIG. five

The invention relates to the construction, in particular to methods for the production of ramming piles.

The purpose of the invention is to eliminate the collapse of the borehole walls in the manufacture of junctions in poorly stable soils.

FIG. 1 shows a reinforcement cage immersed in the ground; in fig. 2 - well formation inside the reinforcement cage | ace; in fig. 3 - formation of a well with a depth exceeding the length of the reinforcement cage; in fig. 4 - filling the well with concrete mix; in fig. 5 - tamping of the concrete mixture into the wells; in fig. 6 - a cylindrical pile made by the proposed method; in fig. 7 - the same, with widening at the bottom.

The proposed method is in i as follows.

The reinforcing cage 2 is immersed in a weakly stable grender 1 with the help of depressing or percussion installations, for example, a pneumatic punch 3 attached to the reinforcement cage 2 by means of a transition tool 4. The reinforcement cage and its dependence on the rigidity and state of production (height of the and in which the work is done, and the equipment can be made completely before the beginning of the dive, or Increase section by measure | keny In order to ensure the correct direction of the frame 2 in the first period of the load, a guide installation or a jig can be used. The reinforcement cage 2 is immersed to a predetermined Depth, which may be equal to the full length of the pile, or equal to or somewhat greater thickness of the layer of weakly stable soil 1, underlain by stable soil 5.

After the reinforcement cage 2 is submerged inside it along the axis of the pile being erected, Pass the well 6 by tamping down the weakly stable soil 1, for example, using a pneumatic punch 3, for which the reinforcement cage 2 serves as a guide. In this case, the soil under the action of a shock load is compacted and, moving in the radial direction, is displaced through the reinforcement cage 2 into the surrounding array of weakly stable soil 1, whereby the walls of the borehole 6 formed by the compaction soil 7 become reinforced rods of the reinforcing cage 2, which dramatically increases their stability, thereby reducing the possibility of the collapse of the walls of the well 6. A well may

perform a depth exceeding the length of the reinforcement cage 2. After the bore 6 has been drilled, the pneumatic punch is removed, and the bore is filled with the material of the bore, for example, semi-dry concrete mix 8, and then the pneumatic punch again passes the wells in the radial direction, through the reinforcement cage 2, it is tamped into the walls of the well, which leads to the formation of a concrete shell 9 reinforced with the reinforcement cage 2. To increase the diameter of the pile shaft, the described operations of filling the well With the series of the trunk and its ramming into the walls of the well can be repeated many times. After reaching the design diameter, the center

5, the well 10 is filled with a concrete mix. If necessary, a well with a broadened heel can be formed using the described method. Perforated tube can be used as reinforcement cage.

Claims (2)

Claim 0 1 A method of manufacturing a stuffed reinforced pile, including the formation of a well, installing a reinforcement cage and laying the material of the borehole with intruding it into the borehole walls, characterized in that, in order to eliminate the collapse of the borehole walls during the manufacture of the pile in poorly stable soils the formation of a well by pogr) - “its formation in a weakly stable soil, and the well is formed by ramming a weakly stable soil inside the reinforcement cage. 2. A method according to claim 1, characterized in that the well is formed with a depth exceeding 5 times the length of the reinforcement cage. ate § N ABOUT) -vl -vl Ltd Theb.6