CN102733429A - Underpinning method for new tunnel to pass through existing building and underpinning system - Google Patents
Underpinning method for new tunnel to pass through existing building and underpinning system Download PDFInfo
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- CN102733429A CN102733429A CN2012102240246A CN201210224024A CN102733429A CN 102733429 A CN102733429 A CN 102733429A CN 2012102240246 A CN2012102240246 A CN 2012102240246A CN 201210224024 A CN201210224024 A CN 201210224024A CN 102733429 A CN102733429 A CN 102733429A
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Abstract
The invention discloses an underpinning method for a new tunnel to pass through the existing building. The underpinning method comprises the following steps that 1) an underpinning pile is piled into a soil layer positioned at one side or two sides passed by a tunnel to be dug at the bottom layer of the existing building; 2) an underpinning bearing table is arranged on the underpinning pile, an underpinning post is arranged on the underpinning bearing table, one end of the underpinning post is in contact with the underpinning bearing table, and the other end of the underpinning post is abutted and connected with a main beam of the exiting building; 3) the main beam of the exiting building is subjected to cross section enlarging treatment, and an underpinning balance beam is formed; and 4) an inclined support element is arranged on the underpinning bearing table, the other end of the inclined support element is abutted and connected with struts of the existing building above the underpinning balance beam and/or the tunnel to be dug, or a shear wall is arranged between the struts of the existing building above the underpinning balance beam and the tunnel to be dug, and the shear wall, the underpinning balance beam, underpinning struts and the struts of the existing building above the tunnel to be dug form an integral structure. The underpinning method has the advantages that during the implementation, the building does not need to be dismounted, roads are not occupied, the use of the building is not influenced, and the economic benefit is obvious.
Description
Technical field
The present invention relates to the buildings pile underpinning technical field, relate in particular to a kind of tunnel of newly repairing and pass through the support and change method of existing building and underpin system.
Background technology
It is more and more that progressively ripe along with the urban traffic system, the new built tunnel in city pass through the situation of existing building, correspondingly, the building underpinning technique also experienced grow out of nothing, progressively ripe evolution.The mode that existing underpinning technique mainly adopts a cabinet frame to underpin; Promptly adopt two underpinned piles to support and underpin beam; By underpinned pile and underpin beam and form underpin system, when at underpinned pile and when underpining between the beam initiatively in advance the top, with the load transfer that underpins beam top to underpinned pile; Make former supporting member built on stilts, the tunnel is passed through smoothly.But there is such defective in this cabinet frame underpinning technique: be only applicable to indoor and peripheral the having ready conditions of building and do the situation of pile foundation underpinning beam; When the place, job site is restricted; Then can't adopt a cabinet frame support and change method, thereby this method of prior art is higher to environmental requirement, perhaps need removes existing building; Long construction period, and demolition of buildings can spend bigger cost and cause economic loss; In addition, behind the demolishing buildings, need carry out transportation, the heap garbage meeting land occupation of rubbish, one is unfavorable for environmental protection, and two come also can spend certain cost; When building again, building then also can cause expending of the energy, human and material resources.
This shows how existing pile foundation underpinning technology is improved, find the wider underpinning technique of a kind of scope of application, can remove existing building and underpin, this is the present technical issues that need to address in this area.
Summary of the invention
In view of this; The object of the present invention is to provide a kind of support and change method that the tunnel passes through existing building of newly repairing; Can under the situation of demolition of buildings not, underpin, thereby reduce influence, reduce cost, avoid the economic loss that causes because of demolition of buildings existing building; Based on this, the present invention also provides a kind of system that underpins that the tunnel passes through existing building of newly repairing.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A kind ofly newly repair the support and change method that the tunnel passes through existing building, comprise the steps:
1) soil layer that is arranged in the one or both sides of the process of waiting to hole at the existing building bottom is squeezed into underpinned pile;
2) underpinning cap of pile is set on underpinned pile, on underpinning cap of pile, is provided with and underpins post, underpin post one end and contact, the girder of other end butt existing building with underpinning cap of pile;
3) girder to existing building carries out the enlarging section processing, forms and underpins equalizer bar;
4) bracing element is set on underpinning cap of pile, the other end of said bracing element with underpin equalizer bar and/or wait to hole the pillar butt of existing building of top; Perhaps underpin post and wait to hole above the pillar of existing building between a shear wall is set, shear wall with underpin equalizer bar, underpin post, the pillar of the existing building of the top of waiting to hole forms an overall structure.
Preferably, said bracing element one end and underpinning cap of pile butt, the pillar of the other end and existing building and underpin the equalizer bar butt.
Preferably, said bracing element one end and underpinning cap of pile butt, the pillar butt of the other end and existing building is simultaneously to the pillar of existing building and underpin equalizer bar and carry out joint reinforcing.
Preferably, said bracing element one end and underpinning cap of pile butt, the other end with underpin the equalizer bar butt, simultaneously to the pillar of existing building and underpin equalizer bar and carry out joint reinforcing.
Preferably, said bracing element is with more than the angle of slope that plate became on the soil layer is 30 degree.Preferably, this angle of slope is 60 degree.
Preferably, said bracing element is the steel concrete material.
Preferably, said underpinned pile is an embedding rock steel pipe pile.
A kind of system that underpins that the tunnel passes through existing building of newly repairing of the present invention; Comprise be arranged on the existing building bottom be arranged in the process of waiting to hole one or both sides soil layer underpinned pile and the underpinning cap of pile that is provided with on the underpinned pile, on underpinning cap of pile, be provided with underpin post; Said post one end that underpins contacts with underpinning cap of pile; The girder of other end butt existing building; Said girder handle to form through enlarging section and underpins equalizer bar, and underpinning cap of pile is provided with bracing element, the other end of said bracing element with underpin equalizer bar and/or the pillar butt of the existing building of the top of waiting to hole.
Preferably, said bracing element is with more than the angle of slope that plate became on the soil layer is 30 degree.Preferably, this angle of slope is 60 degree.
Another kind of the present invention is newly repaiied the system that underpins that the tunnel passes through existing building; Comprise be arranged on the existing building bottom be arranged in the process of waiting to hole one or both sides soil layer underpinned pile and the underpinning cap of pile that is provided with on the underpinned pile, on underpinning cap of pile, be provided with underpin post; Said post one end that underpins contacts with underpinning cap of pile; The girder of other end butt existing building; Said girder handle to form through enlarging section and underpins equalizer bar, underpin post and wait to hole above the pillar of existing building between a shear wall is set, shear wall with underpin equalizer bar, underpin post, the pillar of the existing building of the top of waiting to hole forms an overall structure.
Compared with prior art, of the present inventionly newly repair the system and method that underpins that the tunnel passes through existing building, because the soil layer that is arranged in the one or both sides of the process of waiting to hole at the existing building bottom is squeezed into underpinned pile; Underpinning cap of pile is set on underpinned pile, on underpinning cap of pile, is provided with and underpins post, underpin post one end and contact with underpinning cap of pile; The girder of other end butt existing building carries out enlarging section to the girder of existing building and handles, and forms and underpins equalizer bar; Bracing element is set on underpinning cap of pile; The other end of bracing element with underpin equalizer bar and/or the existing pillar butt of building, bracing element becomes compressed member when initiatively preparatory jacking changes like this, is fulcrum with the suspension column that underpins post; The load that utilizes leg-of-mutton stability will underpin below the equalizer bar is encorbelmented, thereby has following advantage:
1, can avoid remove rebuilding, the expense of underpining is about removes 10% of reconstruction expenses, can be country and retrieves economic losses to be equivalent to remove and rebuild about 90% of cost.Also can save the transportation of rubbish behind the demolishing buildings and the soil of heap garbage, help protecting environment, can also practice thrift expending of the energy, human and material resources when building again;
2, adopt system and the support and change method of underpining of the present invention, when construction, do not influence the normal use of building, do not influence resident's normal life, avoid the resident to move and expense that arrangement, retail shop shop are rented, for the owner avoids the wholesale economic loss;
When 3, adopting the present invention to construct, it is little to take the construction plant, and below architecture bottom layer, can construct like basement, needn't take the summary of public road, and avoiding influences traffic because of excavation pit on the ground;
4, after repair on basement ground, only increased underpin post and diagonal brace, the part beam cross-section strengthens, and former function of use not have to influence basically, guarantees that this building still can normally use after the tunnel passes through.
Description of drawings
Preceding building concerns schematic top plan view with position to be holed to Fig. 1 for the embodiment of the invention one underpins;
Preceding building concerns side schematic view with position to be holed to Fig. 2 for the embodiment of the invention one underpins;
Fig. 3 utilizes the embodiment of the invention one to underpin the system schematic that underpins that the back forms at building and between waiting to hole;
Preceding building concerns schematic top plan view with position to be holed to Fig. 4 for the embodiment of the invention two underpins;
Fig. 5 underpins system schematic for what the embodiment of the invention two formed at building and between waiting to hole;
Fig. 6 underpins system schematic for what the embodiment of the invention three formed at building and between waiting to hole;
Fig. 7 underpins system schematic for what the embodiment of the invention four formed at building and between waiting to hole.
The specific embodiment
In order to make those skilled in the art understand technical scheme of the present invention better, the present invention is done further detailed description below in conjunction with accompanying drawing and specific embodiment.
The present invention is applicable to being underpined the peripheral situation of not having the space that lays out pile of building, and like the no work plane of building periphery, or environment is abominable, the situation of the face of can't organizing work.
In reality was implemented, usable condition of the present invention specifically can comprise following three kinds: 1, tunnel passing through building limit axis below; 2, tunnel passing through building medial axis below; 3, the building below is tiltedly worn in the tunnel.The present invention can neither take public way at the following evolutionary operation face of architecture bottom layer, does not influence the normal use of building again, the society and economy remarkable benefit.
Embodiment one
What provide in the present embodiment is the support and change method of tunnel when passing through existing building limit axis below, and like Fig. 1, shown in Figure 2, along its length, the part of tunnel S is positioned at the below of building N, and present embodiment comprises the steps:
1, at existing building limit axis and tunnel excavation edge near the building axis centre position set up underpinned pile 1, underpinning cap of pile 2 and underpin post 3.As shown in Figure 3; Underpinned pile 1 is arranged on the side of tunnel S; Promptly in the soil layer of existing building basement, set up this underpinned pile 1, underpinning cap of pile 2 is arranged on the top of underpinned pile 1, and the cross section of underpinning cap of pile 2 is greater than underpinned pile 1 and underpin the cross section of post 3; Underpin post 3 and be arranged on the top of underpinning cap of pile 2, what this was newly-increased underpins post 3 promptly as pivot pole.
2, the original girder of existing building that underpins the post top being carried out enlarging section and handle, form and underpin equalizer bar 4, when the top initiatively underpins in advance, can be fulcrum with the pivot pole, utilizes the seesaw principle, encorbelments underpining the load of equalizer bar below 4.
3, repeating above-mentioned steps, form a plurality of underpinned piles, underpinning cap of pile, underpinned pile, underpin equalizer bar along the certain at interval distance of building axis direction; After above-mentioned steps is accomplished, between original pillar 6 bracing element 5 that steel concrete is processed is being set with corresponding on the axis of the existing building limit of tunnel upper at the every newly-increased suspension column that underpins post 3.As shown in Figure 3, bracing element 5 one ends and underpinning cap of pile and underpin post and support the boundary, the other end with underpin equalizer bar 4 and pillar 6 butts.Bracing element 5 becomes compressed member when initiatively in advance jacking changes, be fulcrum with the suspension column that underpins post, utilizes leg-of-mutton stability will build building and underpins the load of equalizer bar below 4 and encorbelment.
4, existing building is reinforced near the body of wall of tunnel one side, pillar 6 and integrality of wall are strengthened, become tensional element, form suspension rod by original compressed member.
Through above step, just formed by newly-increased underpinned pile 1, underpinning cap of pile 2, underpined post 3, the existing equalizer bar 4, newly-increased bracing element 5, the stable monolateral support that existing pillar 6 (being suspension rod) is formed of underpining underpined system.
5, after the concrete that underpins system reaches intensity, before the tunnel excavation, under the situation of monitoring result in limited field that underpins system architecture; Between underpinned pile pile crown and underpinning cap of pile, implement top in advance; Make load transfer to the underpinned pile at shaft position place, existing building limit and the opposite side of pivot pole; Axle place in limit is underpined the load of equalizer bar below 4 encorbelment, guarantee that the tunnel can pass through smoothly, and do not influence fabric structure safety.
Embodiment two
What provide in the present embodiment is that the tunnel passes through the existing building medial axis support and change method in when below, as shown in Figure 4, broad ways, and tunnel S all is positioned at the below of building N, and present embodiment comprises the steps:
1, at building limit axis and tunnel excavation edge near the building axis centre position set up underpinned pile 1, underpinning cap of pile 2 and underpin post 3.As shown in Figure 5; Underpinned pile 1 is arranged on the side of tunnel S; Promptly in the soil layer P of existing building basement, set up this underpinned pile 1, underpinning cap of pile 2 is arranged on the top of underpinned pile 1, and the cross section of underpinning cap of pile 2 is greater than underpinned pile 1 and underpin the cross section of post 3; Underpin post 3 and be arranged on the top of underpinning cap of pile 2, what this was newly-increased underpins post promptly as pivot pole.
2, the original girder of existing building that underpins the post top being carried out enlarging section and handle, form and underpin equalizer bar 4, when the top initiatively underpins in advance, can be fulcrum with the pivot pole, utilizes the seesaw principle, encorbelments underpining the load of equalizer bar below 4.
3, repeating above-mentioned steps, form a plurality of underpinned piles, underpinning cap of pile, underpinned pile, underpin equalizer bar along the certain at interval distance of building axis direction; After above-mentioned steps is accomplished, between the pillar 6 of the existing building on the axis of the building limit of tunnel upper, the bracing element 5 that steel concrete is processed is set with corresponding at the every newly-increased suspension column that underpins post 3.As shown in Figure 5, bracing element 5 one ends and underpinning cap of pile 2 and underpin post 3 butts, the other end with underpin equalizer bar 4 and pillar 6 butts.Bracing element 5 becomes compressed member when initiatively jacking changes in advance, be fulcrum with the suspension column that underpins post, utilizes leg-of-mutton stability that building is underpined the load of equalizer bar below 4 and encorbelments.
4, building is reinforced near the body of wall of tunnel one side, pillar 6 and integrality of wall are strengthened, become tensional element, form suspension rod by original compressed member.
Through above step, just formed by newly-increased underpinned pile 1, underpinning cap of pile 2, underpined post 3, the existing equalizer bar 4, newly-increased bracing element 5, the stable monolateral support that existing pillar 6 (being suspension rod) is formed of underpining underpined system.
5, after the concrete that underpins system reaches intensity, before the tunnel excavation, under the situation of monitoring result in limited field that underpins system architecture; Between underpinned pile pile crown and underpinning cap of pile, implement top in advance; Make load transfer to the underpinned pile at shaft position place, building limit and the opposite side of pivot pole; Axle place in limit is underpined the load of equalizer bar below 4 encorbelment, guarantee that the tunnel can pass through smoothly, and do not influence fabric structure safety.
Embodiment three
Identical with embodiment two is; Present embodiment provides also is the support and change method of tunnel when passing through existing building medial axis below; But the system that underpins that present embodiment forms is referring to Fig. 6; Be employed in the present embodiment that the tunnel bilateral symmetry is provided with underpinned pile, underpinning cap of pile, underpins post, the mode of bracing element, wherein each side is provided with underpinned pile, underpinning cap of pile, underpins post, the step of diagonal brace is all identical with embodiment two, repeats no more here.
Among the above embodiment, the axis with existing building when the tunnel passes through the existing building below is parastate, and in reality enforcement, the tunnel possibly favour the axis of existing building, and the present invention can be suitable for too.
Among the above embodiment; The upper end of bracing element 5 and pillar 6 and underpin the junction butt of equalizer bar 4; Be that bracing element is simultaneously with pillar 6 and underpin equalizer bar 4 butts; In other embodiments, also can with the upper end of bracing element and existing pillar 6 butts or with underpin equalizer bar 4 butts, only need this moment to carry out joint reinforcing and can satisfy construction requirement to underpining equalizer bar 4 and pillar 6.
Embodiment four
The system that underpins that present embodiment forms is referring to Fig. 7; Different with previous embodiment is, present embodiment is provided with shear wall 8 and replaces bracing elements, shear wall 8 upper ends with underpin equalizer bar 4 and connect; Lower end and soil layer offset; Right ends respectively with underpin post 3, existing pillar 6 butts of building, shear wall 8 forms an overall structure with the pillar 6 that underpins equalizer bar 4, underpin post 3, existing building, the bracing element of comparing aforementioned enforcement is more firm.
Wherein, underpinned pile, underpinning cap of pile are set, to underpin the post step all identical with embodiment one, repeat no more here.
More than the present invention has been carried out detailed introduction, use concrete example in the literary composition principle of the present invention and embodiment set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (10)
1. newly repair the support and change method that the tunnel passes through existing building for one kind, it is characterized in that, comprise the steps:
1) soil layer that is arranged in the one or both sides of the process of waiting to hole at the existing building bottom is squeezed into underpinned pile;
2) underpinning cap of pile is set on underpinned pile, on underpinning cap of pile, is provided with and underpins post, underpin post one end and contact, the girder of other end butt existing building with underpinning cap of pile;
3) girder to existing building carries out the enlarging section processing, forms and underpins equalizer bar;
4) bracing element is set on underpinning cap of pile, the other end of said bracing element with underpin equalizer bar and/or wait to hole the pillar butt of existing building of top; Perhaps underpin post and wait to hole above the pillar of existing building between a shear wall is set, shear wall with underpin equalizer bar, underpin post, the pillar of the existing building of the top of waiting to hole forms an overall structure.
2. according to claim 1ly newly repair the support and change method that the tunnel passes through existing building, it is characterized in that, said bracing element one end and underpinning cap of pile butt, the pillar of the other end and existing building and underpin the equalizer bar butt.
3. according to claim 1ly newly repair the support and change method that the tunnel passes through existing building; It is characterized in that; Said bracing element one end and underpinning cap of pile butt, the pillar butt of the other end and existing building is simultaneously to the pillar of existing building and underpin equalizer bar and carry out joint reinforcing.
4. according to claim 1ly newly repair the support and change method that the tunnel passes through existing building; It is characterized in that; Said bracing element one end and underpinning cap of pile butt, the other end with underpin the equalizer bar butt, simultaneously to the pillar of existing building and underpin equalizer bar and carry out joint reinforcing.
5. according to claim 1ly newly repair the support and change method that the tunnel passes through existing building, it is characterized in that, said bracing element is more than 30 degree with the angle of slope that plate became on the soil layer.
6. according to claim 1ly newly repair the support and change method that the tunnel passes through existing building, it is characterized in that said bracing element is the steel concrete material.
7. according to claim 1ly newly repair the support and change method that the tunnel passes through existing building, it is characterized in that said underpinned pile is an embedding rock steel pipe pile.
8. newly repair the system that underpins that the tunnel passes through existing building for one kind; It is characterized in that; Comprise be arranged on the existing building bottom be arranged in the process of waiting to hole one or both sides soil layer underpinned pile and the underpinning cap of pile that is provided with on the underpinned pile, on underpinning cap of pile, be provided with underpin post; Said post one end that underpins contacts with underpinning cap of pile, and the girder of other end butt existing building, said girder are handled to form through enlarging section and underpined equalizer bar; Underpinning cap of pile is provided with bracing element, the other end of said bracing element with underpin equalizer bar and/or wait to hole the pillar butt of existing building of top.
9. according to claim 1ly newly repair the system that underpins that the tunnel passes through existing building, it is characterized in that, said bracing element is more than 30 degree with the angle of slope that plate became on the soil layer.
10. newly repair the system that underpins that the tunnel passes through existing building for one kind; It is characterized in that; Comprise be arranged on the existing building bottom be arranged in the process of waiting to hole one or both sides soil layer underpinned pile and the underpinning cap of pile that is provided with on the underpinned pile, on underpinning cap of pile, be provided with underpin post; Said post one end that underpins contacts with underpinning cap of pile, and the girder of other end butt existing building, said girder are handled to form through enlarging section and underpined equalizer bar; Underpin post and wait to hole above the pillar of existing building between a shear wall is set, shear wall with underpin equalizer bar, underpin post, the pillar of the existing building of the top of waiting to hole forms an overall structure.
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| CN2012102240246A CN102733429A (en) | 2012-06-29 | 2012-06-29 | Underpinning method for new tunnel to pass through existing building and underpinning system |
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| CN2012102240246A CN102733429A (en) | 2012-06-29 | 2012-06-29 | Underpinning method for new tunnel to pass through existing building and underpinning system |
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| CN103075020A (en) * | 2013-02-04 | 2013-05-01 | 广州市胜特建筑科技开发有限公司 | Steel tray supporting force transferring system |
| CN108360838A (en) * | 2018-03-16 | 2018-08-03 | 湖南科技学院 | Steel reinforced concrete support underpins frame and its construction method |
| CN109653527A (en) * | 2018-12-25 | 2019-04-19 | 海门市建筑设计院有限公司 | A kind of building structure middle layer is vertical and horizontal member method of replacing |
| CN110158675A (en) * | 2019-06-04 | 2019-08-23 | 中天建设集团有限公司 | Outer wall of basement anti-side bracing reinforcement system and its construction method in reconstruction project |
| CN110230328A (en) * | 2019-06-24 | 2019-09-13 | 广州市胜特建筑科技开发有限公司 | Pile foundation underpinning System information construction electronic monitoring method |
| CN111947963A (en) * | 2020-07-07 | 2020-11-17 | 浙江求是工程检测有限公司 | Sampling method for detecting building reinforcing steel bars |
| CN112282770A (en) * | 2020-11-01 | 2021-01-29 | 湖南省水利水电勘测设计研究总院 | Construction method for pile-breaking type underpass existing supporting row pile |
| CN112727495A (en) * | 2021-01-29 | 2021-04-30 | 中铁二院工程集团有限责任公司 | Bracing structure for controlling deformation of bottom of tunnel |
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| CN108360838A (en) * | 2018-03-16 | 2018-08-03 | 湖南科技学院 | Steel reinforced concrete support underpins frame and its construction method |
| CN109653527A (en) * | 2018-12-25 | 2019-04-19 | 海门市建筑设计院有限公司 | A kind of building structure middle layer is vertical and horizontal member method of replacing |
| CN110158675A (en) * | 2019-06-04 | 2019-08-23 | 中天建设集团有限公司 | Outer wall of basement anti-side bracing reinforcement system and its construction method in reconstruction project |
| CN110230328A (en) * | 2019-06-24 | 2019-09-13 | 广州市胜特建筑科技开发有限公司 | Pile foundation underpinning System information construction electronic monitoring method |
| CN111947963A (en) * | 2020-07-07 | 2020-11-17 | 浙江求是工程检测有限公司 | Sampling method for detecting building reinforcing steel bars |
| CN112282770A (en) * | 2020-11-01 | 2021-01-29 | 湖南省水利水电勘测设计研究总院 | Construction method for pile-breaking type underpass existing supporting row pile |
| CN112282770B (en) * | 2020-11-01 | 2022-08-12 | 湖南省水利水电勘测设计规划研究总院有限公司 | Construction method for pile-breaking type underpass existing supporting row pile |
| CN112727495A (en) * | 2021-01-29 | 2021-04-30 | 中铁二院工程集团有限责任公司 | Bracing structure for controlling deformation of bottom of tunnel |
| CN112727495B (en) * | 2021-01-29 | 2022-08-26 | 中铁二院工程集团有限责任公司 | Bracing structure for controlling deformation of bottom of tunnel |
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Application publication date: 20121017 |