RU2414563C1 - Method to erect multistory subsurface structure - Google Patents

Method to erect multistory subsurface structure Download PDF

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Publication number
RU2414563C1
RU2414563C1 RU2009137420/03A RU2009137420A RU2414563C1 RU 2414563 C1 RU2414563 C1 RU 2414563C1 RU 2009137420/03 A RU2009137420/03 A RU 2009137420/03A RU 2009137420 A RU2009137420 A RU 2009137420A RU 2414563 C1 RU2414563 C1 RU 2414563C1
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Russia
Prior art keywords
slab
floor slab
level
floor
installation
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RU2009137420/03A
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Russian (ru)
Inventor
Андрей Викторович Карпов (RU)
Андрей Викторович Карпов
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Андрей Викторович Карпов
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Abstract

FIELD: construction.
SUBSTANCE: method to erect multistory subsurface structure includes arrangement of barrier wall along contour of erected structure, installation of piles in areas of design location of structure pillars, installation of floor slab at zero level, excavation of soil under floor slab and installation of floor slab of the following level and then step-by-step removal of soil and installation of floor slab of another level, including foundation slab. Each floor slab, including foundation slab, are fixed with banding beams along perimetre of slab to barrier wall, and hydraulic jacks are installed between beams and slab as additional active spacer system.
EFFECT: minimised horizontal movements of walls that enclose foundation pit and prevention of subsidence of buildings that adjoin construction site with the possibility to control process of side rocks shifting with the help of active unfixturing of barrier walls by hydraulic jacks, increased reliability and reduced deformation of structure.
5 cl, 3 dwg

Description

The invention relates to the construction and can be used for the construction of underground multi-storey buildings for various purposes, of various sizes and configurations in the conditions of close existing buildings and weak water-saturated soils.
The construction of deep pits for underground structures in cramped urban conditions requires the use of technologies that minimize the deformation of operating buildings falling into the zone of influence of new construction. One of these technologies is the construction of underground structures and zero-cycle buildings using a top-down or top-down method.
Top-down construction technology includes the construction of fencing walls along the contour of the structure being erected, the installation of design floor slabs first on the upper floors, excavation from under these floors, and then the construction of ceilings on the underlying floors, excavation from under them and construction foundation slab. During construction, all floor slabs are supported by piles and a foundation pit fence. After the construction of the design columns and walls, a set of appropriate strength of their concrete and joints with ceilings, all temporary structures are removed.
The most universal way to excavate a foundation pit is to use a steel sheet pile, drill piles of various designs and a “wall in the ground” device. The presence of weak water-saturated soils requires additional measures for the implementation of protective shields from bored piles, the use of jet cementation of soils, and the use of a heavy hydraulic tongue.
To ensure the stability of the enclosing structure with a pit depth of more than 4-6 m, its fastening is used with spacer or anchor structures.
The role of spacers in pits constructed using top-down technology is played by design floor slabs, the rigidity of which is much higher than that of traditional steel structures. Due to the increased rigidity of the spacer structures, soil deformations near the foundation pit fence are reduced and its impact on the surrounding buildings is reduced, thereby increasing safety during construction.
The use of top-down construction technology allows us to achieve the following:
- remove an expensive spacer system;
- increase rigidity and, accordingly, reduce the deformation of existing buildings;
- combine the construction of the zero cycle with the construction of aboveground floors and, thereby, reduce the time of commissioning of the building;
- reduce metal consumption for the tongue.
Significant disadvantages of this technology are:
- the cost of soil development in comparison with the open method;
- the need to add temporary piles.
In addition, the most difficult task is to ensure safety directly at the construction site during excavation of the pit “top-down”. It is necessary to carefully design the interface nodes of temporary and permanent structures of the underground structure in order to transfer the load from the upper structures from temporary to permanent design structures.
There is a known method of erecting underground multi-story buildings, using which pits are excavated under each column with a depth corresponding to the height of the structure, then the reinforcement is lowered into the foundation pit and the columns in the formwork are concreted to the floor level of the next floor, the face is developed and the floor slab is concreted. In this sequence, work is carried out to the last floor, while a sheet pile fence is installed around each floor (see France patent No. 2067521, IPC E02D 29/04, 1971).
The disadvantages of this method are the complexity of execution and low productivity when conducting in the face of work on the development of soil under the erected floor and concreting the next floor, which leads to an increase in terms and cost of construction.
A known method of erecting a multi-story underground structure (options) in accordance with the patent of the Russian Federation No. 2220258, priority from 04.04.2003.
The method according to the first embodiment involves the following operations: performing along the contour of the erected wall structure in the soil, performing on the planned surface of the soil overlap with its spacer fastening to the erected walls in the soil, installing an inventory supporting structure with its support on the walls erected in the soil and attaching to the inventory bearing stackable suspension designs. The following is the development of soil under the ceiling in a space bounded by walls. Development is carried out in tiers, with a height of each tier not less than the height of the floor of the structure being constructed. After the development of the soil of each tier, except for the last, the corresponding overlap is erected, and after the development of the soil of the last tier - the foundation slab. At the same time, during the construction of each floor after the development of the soil of the next tier, suspensions are increased to the height of the tier and the corresponding floor is attached to them, and after the construction of the foundation slab, capital columns are erected and the floors are connected to them.
The disadvantages of this method are the technological complexity of its implementation, the need to develop additional structures that provide reliable suspension of floors during phased excavation, and, as a result, the cost of construction. In addition, the development of a pit under temporarily suspended ceilings is an operation with an increased risk of work.
The closest solution to the proposed method in its essence and the achieved result is a method of constructing a multi-story underground structure with the simultaneous development of a foundation pit (see RF patent No. 2136818, priority of 09/10/1999), including the implementation of a wall enclosing the structure in the soil, installation of piles, development of a trench with a ramp, with a deepening below the first floor and creating an upper ceiling with an opening above the ramp. Then, a foundation pit is developed in stages. At each stage, except for the final one, the central part of the pit is developed to the level of deepening of the pioneer trench. In areas adjacent to the enclosing wall along the perimeter, the soil surface is gradually lowered to the level of the next interfloor overlap and an annular overlap band is created in these zones. An annular strip transfers the load from the wall to the piles closest to it. In these zones, it is possible to additionally install spacers between the wall and the piles closest to it. Then the rest of the floor is erected, leaving an opening in it above the ramp of the pioneer trench, which is previously buried below the next underlying floor. At the final stage, the soil is developed over the entire area of the pit, the foundation slab is built, the ramp is removed and the openings in the ceilings are closed.
The disadvantage of the prototype is the possibility of deformation of the walls of the fence as a result of horizontal displacements of lateral rocks, especially in conditions of weak water-saturated soils, which enhance the influence of the pit on the surrounding buildings.
The objective of the invention is to ensure the safety of buildings and structures located in close proximity to the place of work, by achieving greater rigidity of the building envelope and reducing its deformation, as well as simplifying the process of developing soil under floor slabs, which simultaneously serve as a spacer support.
The technical result that can be achieved by using the invention is to minimize horizontal movements of the walls enclosing the foundation pit and, accordingly, the settlement of adjoining buildings with the possibility of controlling the process of deformation (movement) of soils.
The problem is solved due to the fact that in the method of erecting a multi-story underground structure, including the operation of installing along the contour of the erected structure of the fence wall, installing piles at the design location of the columns of the structure, installing the slab at the zero level of the structure, excavating under the slab and installing the slab the next level of overlapping and then the phased excavation and installation of the next level floor slab, including the foundation slab, in each floor slab, including undamentnuyu plate on the plate perimeter wall is attached to the fencing strapping beams and between the beams and the plate set of hydraulic jacks as additional active brace system.
The wall of the foundation pit enclosure can be made of drill piles, sheet piling or the “wall in the ground” method.
Each jack is installed in the recess of the contour of the plate, and the magnitude of the working stroke of the jacks is controlled using geodetic measuring devices that control the level of deformation of the fence wall.
Introduction to the construction cycle of the installation of jacks allows using additional loads created by hydraulic jacks to ensure almost zero horizontal movements of the foundation pit fence and minimize sedimentary deformation of adjacent buildings, which, in turn, increases safety during construction.
In the case of the use of sheet piling, when using an active release with jacks, it is possible to use dowels of a smaller cross section than with passive release, which leads to lower material costs.
Soil development is carried out from under the ceilings using mini excavators and mini loaders, and the developed rock is lifted using conveyor belts through technological openings in the ceilings, which results in the cost of developing the soil equal to the development cost in an open pit.
The invention is illustrated by drawings,
where figure 1 shows the constructed multi-story underground structure in plan;
figure 2 is the same, a longitudinal section;
figure 3 is a diagram of the installation of hydraulic jacks in the slab.
The proposed method for the construction of a multi-story underground structure is as follows: during preparatory work in the ground, a fence wall (1) is made along the perimeter of the multi-story underground structure to its entire depth. Then, in the places of the design arrangement of the columns of the underground structure, piles are made from the day surface (2) with installation of embedded parts in the reinforcing cage to organize the capital, which serves to support the floor slabs on the pile columns as the soil is excavated. Piles above the foundation plate will be columns, and below the foundation plate, piles that transfer the load from the building to the ground. After that, the upper floor slab (3) is concreted at a mark close to the mark of the day surface of the soil, leaving an opening (4) for excavation. On the perimeter of the slab, strapping beams (5) are made, which are attached to the fence wall, and hydraulic jacks (6) are installed in special recesses between the beams and the floor slab as an additional active spacer system. The strapping beams serve to transfer the load from the jacks to the fence wall. The work of the jacks is carried out using mobile oil stations (7).
After the preparatory work is completed, they begin to develop first-level soil from under the installed ceiling. The soil of the bottom of the pit is leveled and compacted, a preparation is laid on the compacted soil, on which the second-level capital overlap (8) is concreted with strapping beams (6) and the technological opening (4) is left.
Each subsequent stage of development of the pit is carried out similarly to the above with the construction of the next interfloor overlap (8), and after the development of the soil of the last floor - the foundation plate (9) with strapping beams.
The number of floors is not limited. Hydraulic jacks (6) are installed in each floor, including the foundation plate.
Design apertures of future stairwells, elevator shafts, etc., can be used as technological openings for excavating and conveying concrete mixture under the slab. Otherwise, the openings in the interfloor and upper floors are finally repaired after removing earth moving and transporting means from the structure using lifting means.
At the end of construction, the gaps between the strapping beams and floor slabs are filled with concrete, and the jacks are dismantled.
Within the proposed technology, the excavation of the upper floor can be carried out in an open way. In this case, after installing the piles, the soil is first excavated to the floor level of the first level, after which the floor slab of the first level (8) and the floor slab at level zero (3) are successively concreted. at a mark close to the surface mark. Next, a phased development of the excavation pit of the second and subsequent levels is carried out with excavation from under the installed ceilings through technological windows, as described above.

Claims (5)

1. A method of constructing a multi-storey underground structure, including installing a fence wall along the contour of the structure being erected, installing piles at the design location of the columns of the structure, installing a floor slab at the ground level of the structure, excavating under the floor slab and installing the next level floor slab, and then stage-by-stage excavation and installation of a floor slab of the next level, including the base plate, characterized in that in each floor slab, including the base plate, around the perimeter slabs are attached to the fence wall with slabs, and hydraulic jacks are installed between the slabs and the slab as an additional active spacer system.
2. The method according to claim 1, characterized in that the piles simultaneously serve as permanent supports - columns, on which the floor slabs of the underground structure are supported during its operation.
3. The method according to claim 1, characterized in that each jack is installed in the recess of the contour of the plate.
4. The method according to claim 1, characterized in that the work of the jacks is controlled using geodetic measuring instruments that control the stroke of the jack depending on the level of horizontal displacement of the fence wall.
5. The method according to claim 1, characterized in that the excavation of the first level of the underground structure is performed by an open method with the serial installation of the floor slab of the first level floor and the floor slab at the zero level of the structure.
RU2009137420/03A 2009-10-02 2009-10-02 Method to erect multistory subsurface structure RU2414563C1 (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2489550C1 (en) * 2011-12-26 2013-08-10 Сергей Олегович Зеге Method for underground structure erection
RU2493328C1 (en) * 2012-04-10 2013-09-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Орловский государственный аграрный университет" (ФГБОУ ВПО Орел ГАУ) Method by vs skalny to erect outer and inner walls of underground premises in soil
WO2013147652A2 (en) * 2012-03-30 2013-10-03 Общество с ограниченной ответственностью "Инженерное бюро Юркевича" Metro station and method for constructing same
RU2505646C2 (en) * 2012-03-30 2014-01-27 Общество с ограниченной ответственностью "Инженерное бюро Юркевича" Subway station and method of its construction (device and method named after yurkevich pb)
RU2562359C2 (en) * 2014-04-02 2015-09-10 Общество с ограниченной ответственностью "Инженерное бюро Юркевича" Single-vault multilevel subway station and method of its construction (p.b. yurkevich's design)
RU2565314C2 (en) * 2014-04-02 2015-10-20 Общество с ограниченной ответственностью "Инженерное бюро Юркевича" Subway station erection method (yurkevich(s method)
RU2571770C2 (en) * 2014-04-22 2015-12-20 федеральное государственное бюджетное образовательное учреждение высшего образования "Иркутский национальный исследовательский технический университет" (ФГБОУ ВО "ИРНИТУ") Tiered method of erection of underground facilities
RU2604098C1 (en) * 2015-11-02 2016-12-10 федеральное государственное автономное образовательное учреждение высшего образования "Южно-Уральский государственный университет" (национальный исследовательский университет)" (ФГАОУ ВО "ЮУрГУ" (НИУ) Method for construction of underground multistorey buildings
RU190916U1 (en) * 2018-11-15 2019-07-16 Сергей Олегович Зеге Underground equipment

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
БАЙЦУР А.И. Опускные колодцы. - Киев: Будивельник, 1972, с.112-142. *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2489550C1 (en) * 2011-12-26 2013-08-10 Сергей Олегович Зеге Method for underground structure erection
WO2013147652A2 (en) * 2012-03-30 2013-10-03 Общество с ограниченной ответственностью "Инженерное бюро Юркевича" Metro station and method for constructing same
WO2013147652A3 (en) * 2012-03-30 2014-01-03 Общество с ограниченной ответственностью "Инженерное бюро Юркевича" Subway station and method for constructing same
RU2505646C2 (en) * 2012-03-30 2014-01-27 Общество с ограниченной ответственностью "Инженерное бюро Юркевича" Subway station and method of its construction (device and method named after yurkevich pb)
RU2493328C1 (en) * 2012-04-10 2013-09-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Орловский государственный аграрный университет" (ФГБОУ ВПО Орел ГАУ) Method by vs skalny to erect outer and inner walls of underground premises in soil
RU2562359C2 (en) * 2014-04-02 2015-09-10 Общество с ограниченной ответственностью "Инженерное бюро Юркевича" Single-vault multilevel subway station and method of its construction (p.b. yurkevich's design)
RU2565314C2 (en) * 2014-04-02 2015-10-20 Общество с ограниченной ответственностью "Инженерное бюро Юркевича" Subway station erection method (yurkevich(s method)
RU2571770C2 (en) * 2014-04-22 2015-12-20 федеральное государственное бюджетное образовательное учреждение высшего образования "Иркутский национальный исследовательский технический университет" (ФГБОУ ВО "ИРНИТУ") Tiered method of erection of underground facilities
RU2604098C1 (en) * 2015-11-02 2016-12-10 федеральное государственное автономное образовательное учреждение высшего образования "Южно-Уральский государственный университет" (национальный исследовательский университет)" (ФГАОУ ВО "ЮУрГУ" (НИУ) Method for construction of underground multistorey buildings
RU190916U1 (en) * 2018-11-15 2019-07-16 Сергей Олегович Зеге Underground equipment

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Effective date: 20111003