CN208763446U - Increase the supporting construction for building the underground space under a kind of existing building group - Google Patents

Increase the supporting construction for building the underground space under a kind of existing building group Download PDF

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Publication number
CN208763446U
CN208763446U CN201821126261.8U CN201821126261U CN208763446U CN 208763446 U CN208763446 U CN 208763446U CN 201821126261 U CN201821126261 U CN 201821126261U CN 208763446 U CN208763446 U CN 208763446U
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bar
supporting construction
supporting
module
edge
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衡朝阳
张剑涛
张孟玫
毛利勤
周智
孙曦源
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JIANYAN FOUNDATION ENGINEERING LLC
Beijing Institute of Petrochemical Technology
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JIANYAN FOUNDATION ENGINEERING LLC
Beijing Institute of Petrochemical Technology
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Abstract

The utility model discloses increase the supporting construction for building the underground space, including edge supporting construction module, middle part supporting construction module and support structure module three parts under a kind of existing building group.Edge supporting construction module, middle part supporting construction module and support structure module are made of pipe curtain steel pipe, gunite concrete wall and supporting fashioned iron, and supporting type ladle includes diagonal brace, edge upright bar, top cross bar, middle part cross bar, bottom bar and middle part upright bar.The utility model uses the construction technology that the big cross section underground space is divided into multiple narrow-bore tunnels, each narrow-bore tunnel can be spaced incorrect order construction simultaneously, construction efficiency is high, the supporting construction includes edge supporting construction module, middle part supporting construction module and support structure module, each supporting intermodule can mutually be got through, and the big cross section underground space is formed.

Description

Increase the supporting construction for building the underground space under a kind of existing building group
Technical field
The utility model relates to increase the supporting construction for building the underground space under a kind of existing building group, it is suitable for Urban Underground The development and utilization in space belong to Construction of Civil Engineering and its technical field.
Background technique
As the gradually development and utilization of the underground space are built in city, increase under existing building group build the demand of the underground space by Step expands, and can be found everywhere in engineerings such as the old residential area underground parking Xia Zengjian, basements.Increase under existing building group and builds ground Following problems may be encountered for down space: 1) existing building group basis is closer with the newly-increased underground space structure distance from top built, and covers Soil is thin, and it is poor to enclose native self-stability, if control it is improper if can induce building and cracking occurs or collapse;2) underground space palpus built is increased newly The pipeline in road and earthing is passed through, pipeline and earth's surface deformation must strict controls;3) usually have around existing building group attached Facility, construction site is narrow, and large scale equipment is not available.
Increase under existing building group and builds that underground space construction difficulty is big, risk is high, if without reliable supporting construction, it will be right Building produces serious influence.In the prior art, it is related to the supporting construction that the underground space is built in increasing under existing building group and shares 4 Kind, details are as follows:
(1) a kind of increased under existing building group using open caisson of the patent of invention of application number CN201611222719.5 builds ground The construction method of down space, comprising the following steps: the 1) data and original position geology survey data for collecting existing building group determine Increase position, range and the geometry for building the underground space, completes the design scheme of proposed open caisson;2) surveying setting-out, in situ really Determine open caisson and applies position;3) open caisson is applied and moves designed distance outside the outer edge of position, required with meeting open caisson foundation pit slope, formwork Plate requires and takes out the requirement of support pad wood, abolishes the flooring of existing building group in the region;4) each section open caisson is successively applied, directly To well sinking to projected depth;5) it sequentially carries out bottom sealing to apply and apply with open caisson top plate, builds ground as increasing inside open caisson Down space.
(2) patent of invention of application number CN102127974A proposes a kind of design of newly-increased basement under existing building group And construction method, it can be applied to the underground space development on soft soil foundation under existing building group comprising the following steps: First stage: existing building group is temporarily handled and is reinforced;Second stage: setting existing building basis integrally underpins Underpinning cushion cap;Phase III: the design and construction that pile foundation is underpined under existing building group is carried out;Fourth stage: carry out with The Design of Excavation Project and construction that basement structure combines;5th stage: it carries out basement structure and is set along the structure for making part The purpose for increasing basement newly under building is realized in meter construction.
(3) patent of invention of application number CN201110075492.7 a kind of frame structure isolated footing existing building group Lower room increasing layer method utilizes the steel drum concrete-pile from former isolated footing end face drill hole indentation foundation soil to support former isolated footing And its upper load, and then to former frame column extend and and basement bottom board formed globality it is newly basic, by under basement bottom board Foundation soil and steel drum concrete-pile shared upper load;Forming space after former isolated footing amputation is to increase the basement built, Method to carry out basement increasing layer.This method is easy for construction, and can strict control foundation underpinning work progress deformation.
(4) patent of invention of application number CN104453274A disclose it is a kind of using supporting construction and underpinning structure support both Have buildings underground increasing layer method: 1) in the outside of frame structure isolated footing, ring-like armored concrete underground of constructing is continuous Wall;2) outside four angles of frame column of intermediate a few row isolated footings and on the inside of the frame column of outside isolated footing outside two angles, Construction reinforced bar concrete underpinned pile;3) the height and position construction level transform beams at the top of isolated footing, the beam are wrapped up from surrounding Firmly frame column, lower end are supported on the top of underpinned pile;The frame column of coaxial line is not linked as entirety also by transform beams, transform beams Both ends are connected with the diaphram wall in outside;4) isolated footing of frame column lower end is amputated;5) ground in high scope from level to level is excavated Lower room cubic metre of earth;One layer of horizontal transform beams in the case where cheating bottom application work;6) step 5) is repeated, until basement bottom board bearing stratum;7) certainly Lower and upper construction basement bottom board, each floor plate and top plate, basement structure construction finish.
Increase under existing building in the prior art and build the underground space, is usually carried out under single solitary building, the underground space Supporting range is smaller;Part support construction is must easily to make to building by existing building basis as load-carrying members At biggish damage;, must be by heavy mechanical equipment during support construction, but part engineering construction narrow space, greatly Type machinery is difficult to have enough to meet the need.Increase under existing building group and build that underground space construction difficulty is big, risk is high, if without reliable supporting knot Structure will produce serious influence to building.
The utility model proposes the supportings of a kind of pipe curtain steel pipe 1, supporting fashioned iron 2 and gunite concrete wall 3 synergistic effect Structure, using the construction technology of big cross section underground space narrow-bore tunnel, each narrow-bore tunnel can be spaced incorrect order construction simultaneously, Construction efficiency is high, can meet requirement, the short construction period, supporting intensity of the extensive underground space development of more solitary buildings It is high, it is ensured that upper building normal use.
The prior art increases under existing building when building the underground space, usually carries out under single solitary building, the underground space Supporting range is smaller, it is difficult to meet the exploitation requirement of the big cross section underground space.The utility model uses the big cross section underground space Narrow-bore tunnel interval construction technology, each narrow-bore tunnel can be spaced incorrect order construction, and construction efficiency is high;Supporting construction includes edge Supporting construction module, middle part supporting construction module and support structure module, each supporting intermodule can mutually be got through, and big cross section is formed The underground space.
Part support construction in the prior art must a part by existing building basis as supporting construction, Biggish damage easily is caused to building.The utility model uses the interval supporting side of big cross section underground space narrow-bore tunnel Method, the supporting construction that narrow-bore tunnel is acted synergistically using pipe curtain steel pipe 1, supporting fashioned iron 2 and gunite concrete wall 3, without borrowing Help existing building basis as a part of supporting construction.
Supporting construction in the prior art in the construction process, must be by heavy mechanical equipment, but part engineering construction field Ground is narrow, and big machinery is difficult with.Supporting construction described in the utility model includes that pipe curtain steel pipe 1, supporting fashioned iron 2 and injection are mixed Solidifying cob wall 3, pipe curtain steel pipe 1, supporting fashioned iron 2 and the construction of gunite concrete wall 3 do not need to be suitable for narrow field by large scale equipment The construction requirement on ground.Supporting fashioned iron 2 include diagonal brace 6, edge upright bar 7, top cross bar 8, middle part cross bar 9, bottom bar 10 and in Portion's upright bar 11.
Utility model content
The technical solution adopted in the utility model is to increase the supporting construction for building the underground space under a kind of existing building group, is adopted With the method for big cross section underground space narrow-bore tunnel interval supporting, multiple narrow-bore tunnels can be spaced incorrect order construction, construction Period is short, high-efficient.
The technical solution adopted in the utility model is to increase the supporting construction for building the underground space under a kind of existing building group, packet Include edge supporting construction module, middle part supporting construction module and support structure module three parts.
Edge supporting construction module, middle part supporting construction module and support structure module are by pipe curtain steel pipe 1, injection coagulation Cob wall 3 and supporting fashioned iron 2 form, and supporting fashioned iron 2 includes diagonal brace 6, edge upright bar 7, top cross bar 8, middle part cross bar 9, bottom transverse Bar 10 and middle part upright bar 11.
Edge supporting construction module is located at the left and right sides that the supporting construction of the underground space 4 is built in the lower increasing of existing building group 5, It is connected between edge supporting construction module and middle part supporting construction module by the first gunite concrete wall 3;Middle part supporting construction Module is located at the medium position that the supporting construction of the underground space 4 is built in the lower increasing of existing building group 5, adjacent middle part supporting construction module Between by the second gunite concrete wall 3 connect;Support structure module is located at edge supporting construction module and middle part supporting construction Among module and among adjacent middle part supporting construction module, support structure module and edge supporting construction module and middle part supporting It is connected between construction module by third gunite concrete wall 3.
The first pipe curtain steel pipe 1 in edge supporting construction module is located at the top of narrow-bore tunnel and side, the first supporting type The outside of the first edge upright bar 7 in the first top cross bar 8 and the first supporting fashioned iron 2 in steel 2.In edge supporting construction module First bottom bar 10 is located at edge supporting construction module bottom, in the first bottom bar 10 and the first edge upright bar 7 and first It is bolted between portion's upright bar 11;First middle part cross bar 9 is located in the middle part of supporting construction, the first middle part cross bar 9 and the first side It is bolted between portion's upright bar 7 and the first middle part upright bar 11;First top cross bar 8 is located at the top of supporting construction, the first top It is bolted between portion's cross bar 8 and the first edge upright bar 7, the first middle part upright bar 11 and the first diagonal brace 6;First edge upright bar 7 are located at narrow-bore tunnel side wall, the first edge upright bar 7 and the first top cross bar 8, the first middle part cross bar 9, the first bottom bar 10 And first be bolted between diagonal brace 6;First middle part upright bar 11 and the first top cross bar 8, the first middle part cross bar 9, first It is bolted between bottom bar 10 and the first diagonal brace 6;First diagonal brace 6 is located at the first top cross bar 8 and the first edge is vertical Bar 7 and the first middle part upright bar 11 cross the corner of position, the first diagonal brace 6 and the first edge upright bar 7 and the first middle part upright bar 11 it Between in 45 ° arrangement, pass through spiral shell between the first diagonal brace 6 and the first edge upright bar 7, the first middle part upright bar 11 and the first top cross bar 8 It tethers and connects;First gunite concrete wall 3 is hardened by being injected in concrete coagulation on narrow-bore tunnel side wall, concrete ejection On the first supporting fashioned iron 2 and the first bottom bar 10, the first top cross bar 8, the first edge upright bar 7 and the first middle part are vertical Between bar 11;Gunite concrete is not needed on the outside of first diagonal brace 6 and the first middle part cross bar 9;First gunite concrete wall 3 and first It is hardened and is connected by concrete coagulation between supporting fashioned iron 2.
The second pipe curtain steel pipe 1 in the supporting construction module of middle part is located at the top of narrow-bore tunnel, in the second supporting fashioned iron 2 The second top cross bar 8 outside.Bottom bar 10 is located at middle part supporting construction module bottom in middle part supporting construction module second Portion is bolted between the second bottom bar 10 and the second middle part upright bar 11;Second middle part cross bar 9 is located in supporting construction Portion is bolted between the second middle part cross bar 9 and the second middle part upright bar 11;Second top cross bar 8 is located at supporting construction top Portion is bolted between the second top cross bar 8 and the second middle part upright bar 11 and the second diagonal brace 6;Second top cross bar 8 and It is bolted between two middle part cross bars 9, the second bottom bar 10 and the second diagonal brace 6;It is horizontal that second diagonal brace 6 is located at the second top Bar 8 and the second middle part upright bar 11 cross the corner of position, in 45 ° of arrangements between the second diagonal brace 6 and the second middle part upright bar 11, second It is bolted between diagonal brace 6 and the second middle part upright bar 11 and the second top cross bar 8;Second gunite concrete wall 3 is by spraying Concrete coagulation hardens on narrow-bore tunnel side wall, and concrete ejection is on the second supporting fashioned iron 2 and the second bottom Between cross bar 10, the second top cross bar 8 and the second middle part upright bar 11, do not need to spray on the outside of the second diagonal brace 6 and the second middle part cross bar 9 Concrete is penetrated, is hardened and is connected by concrete coagulation between the second gunite concrete wall 3 and the second supporting fashioned iron 2.
Third pipe curtain steel pipe 1 in support structure module is located at the top of narrow-bore tunnel, and in third supporting fashioned iron 2 The outside of three top cross bars 8.Third bottom bar 10 is located at support structure module bottom, third bottom transverse in support structure module It is bolted between upright bar 11 in the middle part of bar 10 and third;Cross bar 9 is located in the middle part of supporting construction in the middle part of third, horizontal in the middle part of third It is bolted between upright bar 11 in the middle part of bar 9 and third;Third top cross bar 8 is located at the top of supporting construction, horizontal at the top of third It is bolted between upright bar 11 and third diagonal brace 6 in the middle part of bar 8 and third;Cross bar 9 in the middle part of third top cross bar 8 and third, It is bolted between third bottom bar 10 and third diagonal brace 6;Third diagonal brace 6 is located in third top cross bar 8 and third Portion's upright bar 11 crosses the corner of position, in 45 ° of arrangements, third diagonal brace 6 and third between upright bar 11 in the middle part of third diagonal brace 6 and third It is bolted between middle part upright bar 11 and third top cross bar 8;Third gunite concrete wall 3 is by being injected in narrow-bore tunnel Concrete coagulation hardens on side wall, and concrete ejection is on third supporting fashioned iron 2 and third bottom bar 10, third In the middle part of top cross bar 8 and third between upright bar 11, gunite concrete is not needed on the outside of cross bar 9 in the middle part of third diagonal brace 6 and third, the It is hardened and is connected by concrete coagulation between three gunite concrete walls 3 and third supporting fashioned iron 2.
Compared with prior art, the utility model has the following technical effect that.
(1) supporting construction that the underground space is built in increasing under a kind of existing building group of the utility model is used big cross section underground Space is divided into the construction technology of multiple narrow-bore tunnels, and each narrow-bore tunnel can be spaced incorrect order construction simultaneously, and construction efficiency is high, The supporting construction includes edge supporting construction module, middle part supporting construction module and support structure module, each supporting intermodule It can mutually get through, form the big cross section underground space;
(2) the supporting knot that narrow-bore tunnel is acted synergistically using pipe curtain steel pipe 1, supporting fashioned iron 2 and gunite concrete wall 3 Structure, pipe curtain steel pipe 1, supporting fashioned iron 2 and the construction of gunite concrete wall 3 do not need to be suitable for narrow field by heavy mechanical equipment The construction requirement on ground.
Detailed description of the invention
Fig. 1 is to increase the supporting construction overall model schematic diagram for building the underground space under existing building group.
Fig. 2 is underground space supporting construction model schematic.
Fig. 3 is underground space supporting construction model main view.
Fig. 4 is edge supporting construction module diagram.
Fig. 5 is middle part supporting construction module diagram.
Fig. 6 is support structure module schematic diagram.
Fig. 7 is 2 component of supporting fashioned iron composition and relative position schematic diagram.
Fig. 8 is narrow-bore tunnel interval incorrect order construction schematic diagram.
Fig. 9 is narrow-bore tunnel pipe curtain steel pipe construction schematic diagram.
Figure 10 is narrow-bore tunnel benching tunnelling method earth excavation schematic diagram.
Figure 11 is that narrow-bore tunnel type steel support sets up schematic diagram.
Figure 12 is narrow-bore tunnel gunite concrete wall construction schematic diagram.
In figure: 1. 4. foundation soil of pipe curtain steel pipe 2. supporting fashioned iron, 3. gunite concrete wall, 5. surface buildings 6. 10. bottom bar of diagonal brace 7. edge upright bar, 8. top cross bar, 9. middle part cross bar, 11. middle part upright bar.
Specific embodiment
Increase the supporting construction overall model for building the underground space under existing building group as shown in Figure 1, underground space supporting knot Structure model is as shown in Fig. 2, underground space supporting construction model main view is as shown in Figure 3.Edge supporting construction module such as Fig. 4 institute Show, middle part supporting construction module is as shown in figure 5, support structure module is as shown in Figure 6.
Supporting fashioned iron 2 include bottom bar 10, middle part cross bar 9, top cross bar 8, edge upright bar 7, middle part upright bar 11 and tiltedly Support 6, as shown in Figure 7.Pipe curtain steel pipe 1 in edge supporting construction module is located at the top of narrow-bore tunnel and side, supporting fashioned iron 2 The outside of middle top cross bar 8 and edge upright bar 7;Pipe curtain steel pipe 1 in the supporting construction module of middle part is located at the top of narrow-bore tunnel The outside of top cross bar 8 in portion, supporting fashioned iron 2;Pipe curtain steel pipe 1 in support structure module be located at narrow-bore tunnel top, The outside of top cross bar 8 in supporting fashioned iron 2.
Bottom bar 10 is located at supporting construction bottom, passes through between bottom bar 10 and edge upright bar 7 and middle part upright bar 11 It is bolted;Middle part cross bar 9 is located in the middle part of supporting construction, passes through spiral shell between middle part cross bar 9 and edge upright bar 7 and middle part upright bar 11 It tethers and connects;Top cross bar 8 is located at the top of supporting construction, leads between top cross bar 8 and edge upright bar 7, middle part upright bar 11 and diagonal brace 6 It crosses and is bolted;Edge upright bar 7 is located at narrow-bore tunnel side wall, edge upright bar 7 and top cross bar 8, middle part cross bar 9, bottom transverse It is bolted between bar 10 and diagonal brace 6;Middle part upright bar 11 is located at narrow-bore tunnel side wall, middle part upright bar 11 and top cross bar 8, it is bolted between middle part cross bar 9, bottom bar 10 and diagonal brace 6;Diagonal brace 6 be located at top cross bar 8 and edge upright bar 7 and Middle part upright bar 11 crosses the corner of position, in 45 ° of arrangements, diagonal brace 6 and side between diagonal brace 6 and edge upright bar 7 and middle part upright bar 11 It is bolted between portion's upright bar 7, middle part upright bar 11 and top cross bar 8.
Gunite concrete wall 3 is hardened by being injected in concrete coagulation on narrow-bore tunnel side wall, and concrete ejection exists Bottom bar 10, top cross bar 8, edge upright bar 7 on supporting fashioned iron 2 and between middle part upright bar 11, diagonal brace 6 and middle part cross bar 9 Outside does not need gunite concrete, is hardened between gunite concrete wall 3 and supporting fashioned iron 2 by concrete coagulation.
The supporting construction that narrow-bore tunnel is acted synergistically using pipe curtain steel pipe 1, supporting fashioned iron 2 and gunite concrete wall 3, Construction pipe curtain steel pipe 1 forms pipe curtain at the top of narrow-bore tunnel, and the soil body is excavated using benching tunnelling method inside Pollen sterility, with earth excavation Progress, gradually set up supporting fashioned iron 2, supporting fashioned iron 2 set up after gunite concrete, formed gunite concrete wall 3;Pipe curtain Steel pipe 1, supporting fashioned iron 2 and the construction of gunite concrete wall 3 do not need the construction by heavy mechanical equipment, suitable for narrow place It is required that.
The supporting construction includes edge supporting construction module, middle part supporting construction module and support structure module, and each Shield module can mutually be got through, and form the big cross section underground space.Edge supporting construction module is used for the side of supporting underground space structure Portion narrow-bore tunnel, pipe curtain steel pipe 1 is located at the top of narrow-bore tunnel and side in edge supporting construction module, in supporting fashioned iron 2 The outside of top cross bar 8 and edge upright bar 7;Middle part supporting construction is used for the middle part narrow-bore tunnel of supporting underground space structure, Pipe curtain steel pipe 1 is located at the top of narrow-bore tunnel in the supporting construction module of middle part, the outside of top cross bar 8 in supporting fashioned iron 2;Branch Support structure module is used to connect each narrow-bore tunnel of underground space structure, and pipe curtain steel pipe 1 is located at small disconnected in support structure module The top in face tunnel, the outside of top cross bar 8 in supporting fashioned iron 2.
Under a kind of existing building group of the utility model patent increase build the underground space support construction process it is as follows:
(1) it determines that construction section divides position, the big cross section underground space is divided into narrow-bore tunnel;
(2) each narrow-bore tunnel is spaced incorrect order construction simultaneously under existing building.It constructs between adjacent narrow-bore tunnel Operating room avoids influencing each other during constructing tunnel, narrow-bore tunnel interval incorrect order construction technology such as Fig. 8 away from 10m is greater than It is shown;
(3) after the perforation of big cross section Underground Space Excavation, the structural column and structure outer of narrow-bore tunnel medium position of constructing;
(4) after structural column and structure outer intensity meet design requirement, median septum and corresponding position support are removed;
(5) underground space structure of construction median septum position, and the underground space structure with narrow-bore tunnel medium position Properly connection;
(6) process (3)~process (5) are repeated, builds underground space construction completion until increasing under buildings.
Increase under existing building group and build during the support construction of the underground space, narrow-bore tunnel construction technology is such as Under:
(1) pipe curtain steel pipe of constructing at the top of narrow-bore tunnel forms pipe curtain, as shown in Figure 9;
(2) benching tunnelling method excavates the narrow-bore tunnel earthwork, and remaining core soil in advance, step width keeps 3.0m or so, such as Figure 10 institute Show;
(3) with the progress of face earth excavation, type steel support is gradually set up, as shown in figure 11;
(4) in narrow-bore tunnel inner wall, type steel support erection finishes position gunite concrete, forms gunite concrete wall, As shown in figure 12;
(5) process (2)~process (4) are repeated until narrow-bore tunnel penetrates through.

Claims (4)

1. increasing the supporting construction for building the underground space under a kind of existing building group, it is characterised in that: including edge supporting construction mould Block, middle part supporting construction module and support structure module three parts;
Edge supporting construction module, middle part supporting construction module and support structure module are by pipe curtain steel pipe, gunite concrete wall It is formed with supporting fashioned iron, it is vertical that supporting type ladle includes diagonal brace, edge upright bar, top cross bar, middle part cross bar, bottom bar and middle part Bar;
Edge supporting construction module is located at the left and right sides for increasing under existing building group and building the supporting construction of the underground space, edge branch It is connected between protection structure module and middle part supporting construction module by the first gunite concrete wall;Middle part supporting construction module is located at Increase the medium position for building the supporting construction of the underground space under existing building group, by the between adjacent middle part supporting construction module The connection of two gunite concrete walls;Support structure module is located among edge supporting construction module and middle part supporting construction module and phase Among adjacent middle part supporting construction module, between support structure module and edge supporting construction module and middle part supporting construction module It is connected by third gunite concrete wall.
2. increasing the supporting construction for building the underground space under a kind of existing building group according to claim 1, it is characterised in that: The first pipe curtain steel pipe in edge supporting construction module is located at the top of narrow-bore tunnel and side, first in the first supporting fashioned iron The outside of the first edge upright bar in top cross bar and the first supporting fashioned iron;First bottom bar position in edge supporting construction module Connected between edge supporting construction module bottom, the first bottom bar and the first edge upright bar and the first middle part upright bar by bolt It connects;First middle part cross bar is located in the middle part of supporting construction, between the first middle part cross bar and the first edge upright bar and the first middle part upright bar It is bolted;First top cross bar is located at the top of supporting construction, the first top cross bar and the first edge upright bar, the first middle part It is bolted between upright bar and the first diagonal brace;First edge upright bar is located at narrow-bore tunnel side wall, the first edge upright bar with It is bolted between first top cross bar, the first middle part cross bar, the first bottom bar and the first diagonal brace;First middle part upright bar It is bolted between the first top cross bar, the first middle part cross bar, the first bottom bar and the first diagonal brace;First diagonal brace position It crosses the corner of position in the first top cross bar and the first edge upright bar and the first middle part upright bar, the first diagonal brace and the first edge are stood In 45 ° of arrangements between bar and the first middle part upright bar, the first diagonal brace and the first edge upright bar, the first middle part upright bar and the first top are horizontal It is bolted between bar;First gunite concrete wall by being injected on narrow-bore tunnel side wall concrete coagulation hardening and At, concrete ejection on the first supporting fashioned iron and the first bottom bar, the first top cross bar, the first edge upright bar and Between one middle part upright bar;Gunite concrete is not needed on the outside of first diagonal brace and the first middle part cross bar;First gunite concrete wall and It is hardened and is connected by concrete coagulation between first supporting fashioned iron.
3. increasing the supporting construction for building the underground space under a kind of existing building group according to claim 1, it is characterised in that: The second pipe curtain steel pipe in the supporting construction module of middle part is located at the top of narrow-bore tunnel, the second top in the second supporting fashioned iron The outside of cross bar;Bottom bar is located at middle part supporting construction module bottom, the second bottom transverse in middle part supporting construction module second It is bolted between bar and the second middle part upright bar;Second middle part cross bar is located in the middle part of supporting construction, the second middle part cross bar with It is bolted between second middle part upright bar;Second top cross bar is located at the top of supporting construction, the second top cross bar and second It is bolted between middle part upright bar and the second diagonal brace;Second top cross bar and the second middle part cross bar, the second bottom bar and It is bolted between second diagonal brace;The angle of second diagonal brace is located at the second top cross bar and the second middle part upright bar crosses position Portion, in 45 ° of arrangements between the second diagonal brace and the second middle part upright bar, the second diagonal brace and the second middle part upright bar and the second top cross bar it Between be bolted;Second gunite concrete wall is hardened by being injected in concrete coagulation on narrow-bore tunnel side wall, is mixed Solidifying soil is injected on the second supporting fashioned iron and the second bottom bar, the second top cross bar and the second middle part upright bar between, second Gunite concrete is not needed on the outside of diagonal brace and the second middle part cross bar, is passed through between the second gunite concrete wall and the second supporting fashioned iron Concrete coagulation hardening connection.
4. increasing the supporting construction for building the underground space under a kind of existing building group according to claim 1, it is characterised in that: Third pipe curtain steel pipe in support structure module is located at the top of narrow-bore tunnel, the third top cross bar in third supporting fashioned iron Outside;Third bottom bar is located at support structure module bottom, third bottom bar and third middle part in support structure module It is bolted between upright bar;Cross bar is located in the middle part of supporting construction in the middle part of third, cross bar and third middle part upright bar in the middle part of third Between be bolted;Third top cross bar is located at the top of supporting construction, upright bar and the in the middle part of third top cross bar and third It is bolted between three diagonal braces;In the middle part of third top cross bar and third between cross bar, third bottom bar and third diagonal brace It is bolted;Third diagonal brace is located at upright bar in the middle part of third top cross bar and third and crosses the corner of position, third diagonal brace with Pass through bolt in 45 ° of arrangements between upright bar in the middle part of third between third diagonal brace and third middle part upright bar and third top cross bar and connect It connects;Third gunite concrete wall is hardened by being injected in concrete coagulation on narrow-bore tunnel side wall, and concrete ejection is On three supporting fashioned iron and between third bottom bar, third top cross bar and third middle part upright bar, in third diagonal brace and third Gunite concrete is not needed on the outside of portion's cross bar, it is hard by concrete coagulation between third gunite concrete wall and third supporting fashioned iron Change connection.
CN201821126261.8U 2018-07-17 2018-07-17 Increase the supporting construction for building the underground space under a kind of existing building group Active CN208763446U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110107321A (en) * 2019-05-08 2019-08-09 上海隧道工程有限公司 Fixed support frame frame mounting device and its installation method applied to pipe-roof method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110107321A (en) * 2019-05-08 2019-08-09 上海隧道工程有限公司 Fixed support frame frame mounting device and its installation method applied to pipe-roof method

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