CN204960366U - Tunnel passes through device that underpins of existing large diameter pile building - Google Patents
Tunnel passes through device that underpins of existing large diameter pile building Download PDFInfo
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- CN204960366U CN204960366U CN201520766115.1U CN201520766115U CN204960366U CN 204960366 U CN204960366 U CN 204960366U CN 201520766115 U CN201520766115 U CN 201520766115U CN 204960366 U CN204960366 U CN 204960366U
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- underpin
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- pile
- large diameter
- existing building
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Abstract
The utility model discloses a tunnel passes through device that underpins of existing large diameter pile building, including underpining roof beam (2), underpin (2) two ends on the roof beam and for underpining base (6), underpin for underpining miniature stake (1) between roof beam (2), miniature stake (1) along existing building pillar (5) and building large diameter pile (3) circumference setting underpin, underpin miniature stake (1) upper end and be provided with " L " shape steel sheet (4), " L " shape steel sheet (4) links to each other with existing building pillar (5), underpin miniature (1) through steel sheet (7) with underpin roof beam (2) and be connected. The utility model discloses an underpin miniature stake (1) with existing building load transfer to underpin roof beam (2) and underpin base (6) on. Be applicable to the subterranean tunnel and pass through existing building, can underpin demolising existing building, accomplish simultaneously and consolidate the construction in tunnel to the reduction reduces construction cost to the influence of existing building, has solved not enough among the current basic underpinning.
Description
Technical field
The utility model belongs to underground structrue engineering technical field, particularly relates to a kind of underpinning device of Tunnel Passing existing building pile foundation.
Background technology
Along with the development of urban construction, the quickening of modernization, the planning of urban underground space, design, utilization also get more and more, such as subway tunnel, motor vehicle in tunnel, underground utilities, underground civil defense engineering etc.Particularly in Construction of Urban Rail Traffic process, construction of tunnel is particularly outstanding to the use of the underground space.When construction of tunnel is by intensive high-rise city, planning and designing are difficult to accomplish to avoid closely passing through existing building basis from underground, this makes the construction requirement in tunnel very harsh.Need the safety protecting existing building in work progress, also will ensure carrying out smoothly of object of construction production, therefore take effective technical measures to be extremely necessary.Take under normal circumstances to carry out necessary process and foundation underpinning to the ground of existing building.Underpining the constraint by various objective condition in process, need to carry out structure Underpinning according to the concrete condition of upper building structure, construction requirement speed is fast, the duration is short, and technical difficulty is relatively high.And the impact of underground environment and upper building all also exists many unsafe factors, also need the normal performance of safety and the function ensureing not affect existing building on this basis.At present, take different construction technologies for different situations, pile foundation underpinning method can be selected, raft foundation underpins method, the measure such as stake corbel changes method, pile slab supporting method, integrated construction method.
Summary of the invention
The technical problems to be solved in the utility model: the underpinning device providing the existing large diameter pile building of a kind of Tunnel Passing, for the highrise building adopting large diameter pile.Can underpin need not existing building be removed, complete the construction reinforcement to tunnel simultaneously, thus reduce the impact on existing building, reduce construction cost, solve the deficiency in existing foundation underpinning technology.
The technical solution of the utility model is: the underpinning device of the existing large diameter pile building of a kind of Tunnel Passing, comprise transform beams, transform beams two end is for underpining base, for underpining mini pile between transform beams, underpin mini pile to arrange along existing building pillar and building large diameter pile circumference, underpin mini pile upper end and be provided with " L " shape steel plate, " L " shape steel plate is connected with existing building pillar, underpins mini pile and is connected with transform beams through steel plate.
Underpin mini pile quantity and be more than or equal to 4.
Underpin mini pile to be connected with the mode of welding with adopting bolt between existing building pillar by " L " shape steel plate.
Underpining mini pile both sides is arranged to steel plate, and steel plate two ends are connected with transform beams respectively by welding.
The base that underpins of transform beams two end adopts concreting.
Briefly, what the utility model comprised the transform beams (arch) that is arranged on and plans to build tunnel upper and two ends underpins base, and underpins mini pile for what underpin and be connected with " L " shape steel plate.Underpin mini pile and be arranged on existing building large diameter pile periphery, mini pile lower end is positioned over tunnel bottom.Underpining mini pile upper end adopts " L " shape steel plate to be connected with existing building pillar, underpins mini pile stage casing and adopts steel plate to weld with transform beams (arch).Said method is all adopted to underpin planning to build the major diameter of tunnel by region and existing building lap, overall underpinning device is provided with in rear dismounting tunnel and underpins mini pile, making building force of gravity to underpining on mini pile and transform beams, namely completing and underpining.Underpin mini pile to arrange around original and have 4 at least.Transform beams is generally arch, arranges twice under often arranging original stake, and two ends arrange and underpin base.Connect and adopt bolt to be connected existing building pillar and miniature underpinned pile with the mode of welding with " L " shape steel plate.Underpining mini pile adopts steel plate to weld with transform beams.
The utility model pile foundation underpinning structure underpins mini pile by arranging in existing building large diameter pile periphery and arranges transform beams in relevant position, underground, is transferred to by the vertical stress on existing building large diameter pile on newly-built underpinning structure to bear existing building load.Adopt underpinning device of the present utility model, the normal use of existing building can not be affected, do not affect the normal life of resident, avoid resident to move and the generation of the expense such as arrangement, for owner avoids wholesale economic loss, complete the construction reinforcement to construction of tunnel simultaneously.
Accompanying drawing explanation
Fig. 1 is that the utility model implements cross-sectional view;
Fig. 2 is for underpining mini pile and existing building pillar connection diagram;
Fig. 3 is connected horizontal schematic diagram for underpining mini pile with transform beams;
Fig. 4 is connected longitudinal schematic diagram for underpining mini pile with transform beams.
Detailed description of the invention
Be further described below in conjunction with Figure of description 1 ~ 4 pair of the utility model.
A kind of underpinning device (see accompanying drawing 1) of Tunnel Passing existing building, be included in existing building large diameter pile 3 surrounding arrange underpin mini pile 1 and plan to build tunnel upper erection transform beams 2, underpining mini pile 1 upper end adopts " L " shape steel plate 4 and bolt 8 to be connected with existing building pillar 5, transform beams 2 with underpin mini pile 1 intersection and adopt two block plates 7 to weld, transform beams 2 liang of end concretings underpin base 6.
Concrete implementation step is as follows:
Step 1: select existing building to carry out strengthening construction with the large diameter pile planning to build Tunnel Passing part.Be applicable to position to carry out underpining mini pile 1 pore-forming at 0.5 ~ 1.0m place, selected existing building large diameter pile outer, aperture, at about 200mm, underpins mini pile 1 bottom and deeply plans to build tunnel bottom basement rock certain length.Select steel pipe reinforcement after pore-forming, adopt pressure grouting that cement mortar splitting is extended to around in ground.The concrete quantity underpining mini pile 1 should be selected according to on-the-spot existing building load situation, underpins mini pile 1 and select layout 4 around each large diameter pile to be illustrated in the present embodiment.
Step 2: after underpining mini pile 1 pile, constructs to planning to build tunnel.Tunnel adopts the construction of " CD " method, for avoiding existing building bearing capacity of pile foundation sharply to decline, needs remaining core soil in advance.When constructing tunnel reach underpin mini pile 1 section after be parallel to miniature underpinned pile 1 position, tunnel erection transform beams 2, transform beams 2 material selection arch i iron.After dig out and transform beams 2 junction mini pile 1 surface concrete, adopt 15mm steel plate 7 both to be welded.Transform beams 2 bottom adopts poured in place concrete as underpining base 6.
Step 3: underpin mini pile 1 upper end and adopt " L " shape steel plate 4, is connected with existing building pillar 5 by the mode of bolt 8 with welding.The described mini pile 1 that underpins is connected with building pillar 5, transform beams 2 all by the way.
Step 4: after having welded in step 2, step 3, inner lining cutting is carried out to planning to build tunnel, and tunnel internal is underpined mini pile 1 and remove, existing building upper load is underpined on base 6 by underpining mini pile 1 and transferring to transform beams 2 and be delivered to.
Claims (5)
1. the underpinning device of the existing large diameter pile building of Tunnel Passing, it is characterized in that: comprise transform beams (2), transform beams (2) two end is for underpining base (6), for underpining mini pile (1) between transform beams (2), underpin mini pile (1) to arrange along existing building pillar (5) and building large diameter pile (3) circumference, underpin mini pile (1) upper end and be provided with " L " shape steel plate (4), " L " shape steel plate (4) is connected with existing building pillar (5), underpins mini pile (1) and is connected with transform beams (2) through steel plate (7).
2. the underpinning device of the existing large diameter pile building of a kind of Tunnel Passing according to claim 1, is characterized in that: underpin mini pile (1) quantity and be more than or equal to 4.
3. the underpinning device of the existing large diameter pile building of a kind of Tunnel Passing according to claim 1, is characterized in that: underpin mini pile (1) by adopting bolt (8) to be connected with the mode of welding between " L " shape steel plate (4) with existing building pillar (5).
4. the underpinning device of the existing large diameter pile building of a kind of Tunnel Passing according to claim 1, is characterized in that: underpin mini pile (1) both sides and be arranged to steel plate (7), and steel plate (7) two ends are connected with transform beams (2) respectively by welding.
5. the underpinning device of the existing large diameter pile building of a kind of Tunnel Passing according to claim 1, is characterized in that: the base (6) that underpins of transform beams (2) two end adopts concreting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520766115.1U CN204960366U (en) | 2015-09-30 | 2015-09-30 | Tunnel passes through device that underpins of existing large diameter pile building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520766115.1U CN204960366U (en) | 2015-09-30 | 2015-09-30 | Tunnel passes through device that underpins of existing large diameter pile building |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204960366U true CN204960366U (en) | 2016-01-13 |
Family
ID=55055440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520766115.1U Withdrawn - After Issue CN204960366U (en) | 2015-09-30 | 2015-09-30 | Tunnel passes through device that underpins of existing large diameter pile building |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204960366U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155867A (en) * | 2015-09-30 | 2015-12-16 | 贵州正业工程技术投资有限公司 | Underpinning device for tunnel to pass through existing large-diameter pile building |
-
2015
- 2015-09-30 CN CN201520766115.1U patent/CN204960366U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105155867A (en) * | 2015-09-30 | 2015-12-16 | 贵州正业工程技术投资有限公司 | Underpinning device for tunnel to pass through existing large-diameter pile building |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160113 Effective date of abandoning: 20170531 |
|
| AV01 | Patent right actively abandoned |