SU715713A1

SU715713A1 - Method of erecting anchor in soil

Info

Publication number: SU715713A1
Application number: SU772545068A
Authority: SU
Inventors: Яков Моисеевич Бобровский; Михаил Шикович Окунев; Густав Александрович Скормин; Михаил Ильич Смородинов; Борис Сергеевич Федоров
Priority date: 1977-11-17
Filing date: 1977-11-17
Publication date: 1980-02-15

Description

Изобретение относится к строительству и касается возведения анкеров в грунте; используемых для крепления различных конструкций и оборудования к грунту.The invention relates to the construction and for the construction of anchors in the ground; used for attaching various structures and equipment to the ground.

Известен способ возведения грунтовых анкеров, включающий в себя бурение сква- 5 жины, заполнение ее твердеющим раствором и вдавливание в еще незатвердевший раствор анкера [1].A known method for the construction of soil anchors, including drilling a well 5, filling it with a hardening solution and pressing it into an unhardened solution of the anchor [1].

Известен также способ возведения анкера в грунте, включающий бурение скважины под защитой обсадной трубы, погруже- ^ί0ние анкера в скважину и заполнение скважины твердеющим раствором с одновременным извлечением обсадной трубы [2].Another known method of erection of the anchor in the soil, comprising drilling the borehole under the protection casing ^ί0 immersion of the anchor in the hole and filling the hole with a hardening solution while withdrawing the casing [2].

Последний способ является наиболее близким к описываемому изобретению. ₁₅ The latter method is the closest to the described invention. _fifteen

Недостаток известных способов заключается в том, что затвердевший в скважине раствор имеет недостаточную площадь кон^;такта со стенками скважины, в результате' чего несущая способность анкера, определяемая сцеплением затвердевшего раствора со & стенками скважины, недостаточно высока.A disadvantage of the known methods is that the hardened solution in the well has insufficient con area ^; stroke with the walls of the well, as a result of which the bearing capacity of the anchor, determined by the adhesion of the solidified solution to the walls of the well, is not high enough.

Цель изобретения — повышение несущей способности анкера.The purpose of the invention is to increase the bearing capacity of the anchor.

Цель достигается тем, что предлагаемым способом возведения анкера в грунте, включающим бурение скважины под защитой обсадной трубы, погружение анкера в скважину и заполнение скважины твердеющим раствором с одновременным извлечением обсадной трубы, по мере извлечения обсадной трубы на стенках скважины выполняют продольные или винтовые пазы.The goal is achieved by the fact that the proposed method of erecting an anchor in the ground, including drilling a well under the protection of the casing, immersing the anchor in the well and filling the well with a hardening solution while removing the casing, as longitudinal as the casing is removed, perform longitudinal or helical grooves on the walls of the well.

На фиг. 1 изображен анкер, возводимый описываемым способом; на фиг. 2 — разрез А—А на фиг. 1.In FIG. 1 shows an anchor erected by the described method; in FIG. 2 — section A — A in FIG. 1.

При возведении анкера в грунте бурят скважину 1 под защитой обсадной трубы, нижняя часть которой снабжена ножами, внедряющимися в грунт при извлечении обсадной трубы. В скважину 1 устанавливают анкер 2, после чего одновременно извлекает обсадную трубу и заполняют скважину твердеющим раствором 3.During the construction of the anchor in the ground, a well 1 is drilled under the protection of the casing, the lower part of which is equipped with knives that penetrate the ground when removing the casing. Anchor 2 is installed in the well 1, after which it simultaneously removes the casing and fill the well with a hardening solution 3.

При-этом из нижней час^и обсадной трубы выходят ножи и врезаются в стенки скважины, образуя в них продольные или винтовые пазы 4 в зависимости от прямолинейного или винтового перемещения обсадной трубы.At the same time, knives come out of the bottom hour and the casing and cut into the borehole walls, forming longitudinal or helical grooves 4 in them, depending on the rectilinear or screw movement of the casing.

Продольные или винтовые пазы 4 увеличивают площадь контакта затвердевшего раствора со стенками скважины, в результате чего несущая способность анкеров, возводимых в грунте описываемым способом, увеличивается в 2—5 раза. 5Longitudinal or screw grooves 4 increase the contact area of the hardened solution with the walls of the well, as a result of which the bearing capacity of the anchors erected in the soil by the described method increases by 2–5 times. 5

При установке в скважину инъекционного анкера пазы также прорезают уплотненную зону грунта, окружающего скважину, и обеспечивают проникновение инъекционного раствора на значительное расстоя-When an injection anchor is installed in the well, the grooves also cut through the compacted zone of the soil surrounding the well and allow the injection solution to penetrate a considerable distance

Claims

The invention relates to the construction and construction of anchors in the ground; used for fastening various structures and equipment to the ground. There is a method of erecting ground anchors, which includes drilling a well, filling it with a hardening solution and pressing it into the still non-solid solution of an anchor 1. There is also known a method of raising an anchor in the ground, including drilling a well under the protection of a casing pipe, immersing the anchor in the well and filling the well with a hardening solution. removing casing 2 at the same time. The latter method is closest to the described invention. A disadvantage of the known methods is that the solution hardening in the well has an insufficient area of contact with the walls of the well, as a result of which the carrying capacity of the anchor determined by the adhesion of the solid solution to the 0 walls of the well is not high enough. The purpose of the invention is to increase the carrying capacity of the anchor. The goal is achieved by the proposed method of erection of an anchor in the ground, including drilling a well under the protection of the casing, immersing the anchor in the well and filling the well with a hardening solution while removing the casing, as the casing is removed, longitudinal or helical grooves are made on the borehole walls. FIG. 1 shows an anchor being erected by the described method; in fig. 2 shows section A-A in FIG. I. When erecting an anchor in the ground, drill a well 1 under the protection of a casing, the lower part of which is equipped with knives that penetrate the soil when the casing is removed. Anchor 2 is installed in the borehole 1, and then the casing is pulled out and the well is filled with hardening solution 3. At the same time, knives emerge from the lower casing and cut into the borehole walls, forming longitudinal or helical grooves 4 in them, depending on straight or screw movement of the casing. The longitudinal or helical grooves 4 increase the contact area of the solidified solution with the walls of the well, resulting in an increase in the carrying capacity of anchors built in the soil by the described method. When installed in the well of the injection anchor, the grooves also cut through the compacted zone of the soil surrounding the well, and ensure the penetration of the injection solution to a considerable distance. Claim 1. Method of erection of an anchor in the ground, including drilling a well under the protection of a casing, immersing an anchor in a hole and filling a well with a hardening solution while removing the casing, characterized in that in order to increase the carrying capacity of the anchor as the casing is removed grooves are made on the borehole walls. 2. A method according to claim 1, characterized in that the grooves are longitudinal. 3. A method according to claim I, characterized in that the groove is screw-shaped. Sources of information taken into account in the examination 1. Japanese patent number 49-4724, cl. 86 (3) A 52, published. 1974.

2. Smorodinov M.I. and Fedorov B.S. The construction of foundations and structures by the method “wall c. ground. M., stroiizdat, 1976, p. 68 (prototype).

YES

FIG. 2