CN101230753A - Method for reinforcing top cover frame buildings work in non-batholith shield excavation process - Google Patents
Method for reinforcing top cover frame buildings work in non-batholith shield excavation process Download PDFInfo
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- CN101230753A CN101230753A CNA2008100264752A CN200810026475A CN101230753A CN 101230753 A CN101230753 A CN 101230753A CN A2008100264752 A CNA2008100264752 A CN A2008100264752A CN 200810026475 A CN200810026475 A CN 200810026475A CN 101230753 A CN101230753 A CN 101230753A
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- building
- steel truss
- shield driving
- shield
- tunneling
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Abstract
The invention relates to a strengthening method of a top head frame building in the process of non rock foundation shield tunneling, and the method is characterized in that: with adopting a steel truss and a holt hoop iron top supporting frame column, a measuring instrument is used to observe the deformation condition of a building and the steel truss, and a mechanical or oil jack is used for adjustment to realize the height of each point of the whole building to be kept invariable during the construction process. When the shield tunneling is finished, if a ground foundation has excessive settlement, the grouting method is adopted for processing the ground foundation. The invention is characterized in that a temporary underpinning device for the steel truss is adopted for transferring the whole or a part of the weight of the building onto the ground foundation out of the influence of the shielding tunneling, and a column base of the prior building is not needed excavating and strengthening before the shielding tunneling. The invention has the remarkable improvements and the beneficial effects that the safety of an upper building is ensured during the shielding tunneling, the collapse of a casing layer which is arranged at the upper part of a shield caused by the stress of the building is prevented, the progress and the safety of the shielding tunneling is influenced, and the strengthening cost of the upper building is lowered.
Description
Technical field
The present invention relates to city underground shield driving engineering, particularly a kind of in non-batholith the reinforcement means of loam cake frame building in the shield driving process.
Carry on the back technology
Metro construction adopts shield construction progressively to rise, in soft rock strata, and advantages such as speed of application is fast, ambient influnence is little, the loam cake building strengthening is simple that it has.Yet, shield driving in non-batholith, desirable method is not found in the reinforcing of loam cake frame building all the time, just takes measures such as pile foundation underpinning or increase raft foundation to reinforce the sedimentation of control building in the basis of loam cake building, this reinforcement means is a kind of passive reinforcement means, the expense height, the time is long, increases the building system load, can not implementation procedure control, easily cause the damage of loam cake building.
Summary of the invention
The present invention be intended to overcome the deficiencies in the prior art and provide a kind of ensure that the building safety construction costs is few and progress is fast a kind of in non-batholith shield driving process the reinforcement means of loam cake frame building.
The object of the present invention is achieved like this: a kind of in non-batholith shield driving process the reinforcement means of loam cake frame building, comprise and adopt steel truss and anchor ear jacking frame column, measuring instrument observation building and steel truss distortion situation, utilize machinery or hydraulic jack adjustment, realize that whole each point height of solitary building remains unchanged in work progress, after shield driving is finished, ground is if there is excessive sedimentation, then adopt the grouting means that ground is handled, it is characterized in that adopting the interim underpinning device of steel truss, the all or part of weight of building is transferred on the outer ground of shield driving influence, be need not before the shield driving base for post of existing building is excavated reinforcing.
The interim underpinning device of described steel truss is meant and utilizes anchor ear and load-bearing steel truss that all or part of the transferring to of building weight that first floor frame column is born is subjected on the outer ground of shield driving influence basin.
The shield driving overall process can be monitored building and foundation settlement, and adjusts the top lifting height of jack according to the sedimentation situation, guarantees that the elevation of building each point is constant.
By adopting the first floor frame column of steel truss, anchor ear and jack jacking building, measuring apparatus monitoring building and steel truss are out of shape situation when shield driving, utilize the jack adjustment, realize that dynamically each point height of building remains unchanged in work progress.After shield driving was finished, ground then adopted the grouting means that ground is handled if excessive depression is arranged.
Principle of the present invention is a principle of utilizing power to transmit, and all or part of the transferring to of the pressure of shield driving building that top cover bears is not subjected on the ground that shield driving influences; And use the sedimentation situation of measuring instrument monitoring building when shield driving, and utilize jack adjustment, reach the target that each point height of building remains unchanged at work progress.
Marked improvement of the present invention and beneficial effect are: the safety of upper building when having ensured shield driving, prevent that shield structure top overburden layer from subsiding under building weight, and influence shield driving progress and safety, reduce the reinforcing expense of upper building.
Adopt the steel truss support and change method, in the metro shield tunneling process, the loam cake building is underpined temporarily, guarantee the safety of building, use to building is disturbed little, avoid moving the social influence that causes, steel truss underpins at constructing tunnel and passes through the dismountable recycling in back, has reduced construction costs, has huge social and economic benefit.
Description of drawings:
Fig. 1 is a schematic diagram of the present invention.
Fig. 2 is a reinforcing flow chart of the present invention.
Among the figure: 1 for load-bearing steel truss, 2 is that jack, 3 is that anchor ear, 4 is the building frame post, and 5 is the building frame beam, and 6 is the tunnel of shield-tunneling construction.
The specific embodiment
1, detailed reinforcing flow process of readding shield structure loam cake frame building.
2, consult shield structure loam cake building design drawing, calculate the weight that each frame column of the building first floor is born.
3, according to the weight that each frame column held, design is also made load-bearing steel truss 1) and anchor ear 3), purchase suitable jack 2).
4, root pick result of calculation is handled the ground of supporting steel truss.
5, after ground is handled and had certain intensity, carry out strengthening construction.The steel truss of lifting load-bearing earlier 1), anchor ear 3 is installed on first floor frame column then) (can according to circumstances frame column be disconnected or not disconnect) in the anchor ear lower end, again at anchor ear 3) and load-bearing steel truss 1) between installation jack 2).In the shield driving process, by measuring instrument observation building and steel truss 1) the distortion situation, and steel truss 1) support the foundation settlement situation, adjust jack 2) top lifting height, each point height of building is remained unchanged;
6, if excessive sedimentation appears in ground, then after shield driving, ground is carried out grouting treatment, after the ground of handling has sufficient intensity, remove the hardened system of frame column.
Implementation
Outside the shield driving influence, support the ground of jack and steel truss, adopt upper berth, reinforcing bar basis steel plate to handle.
But jack adopts the jack of hydraulic pressure reading, and anchor ear adopts steel to make.
The load-bearing steel truss adopts steel to make or with the assembly unit of assembling shellfish thunder frame, the scene lifts with crane.
Claims (3)
1. the reinforcement means of loam cake frame building in the non-batholith shield driving process, comprise and adopt steel truss and anchor ear jacking frame column, measuring instrument observation building and steel truss distortion situation, utilize machinery or hydraulic jack adjustment, realize that whole each point height of solitary building remains unchanged in work progress, after shield driving is finished, ground is if there is excessive sedimentation, then adopt the grouting means that ground is handled, it is characterized in that adopting the interim underpinning device of steel truss, the all or part of weight of building is transferred on the outer ground of shield driving influence, be need not before the shield driving base for post of existing building is excavated reinforcing.
2. according to claim 1 a kind of in non-batholith shield driving process the reinforcement means of loam cake frame building, it is characterized in that the interim underpinning device of described steel truss is meant to utilize anchor ear and load-bearing steel truss that all or part of the transferring to of building weight that first floor frame column is born is subjected on the outer ground of shield driving influence basin.
3. the reinforcement means of a section according to claim 1 loam cake frame building in non-batholith shield driving process, it is characterized in that to monitor building and foundation settlement in the shield driving overall process, and adjust the top lifting height of jack according to the sedimentation situation, guarantee that the elevation of building each point is constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100264752A CN101230753A (en) | 2008-02-26 | 2008-02-26 | Method for reinforcing top cover frame buildings work in non-batholith shield excavation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100264752A CN101230753A (en) | 2008-02-26 | 2008-02-26 | Method for reinforcing top cover frame buildings work in non-batholith shield excavation process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101230753A true CN101230753A (en) | 2008-07-30 |
Family
ID=39897534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100264752A Pending CN101230753A (en) | 2008-02-26 | 2008-02-26 | Method for reinforcing top cover frame buildings work in non-batholith shield excavation process |
Country Status (1)
| Country | Link |
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| CN (1) | CN101230753A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611114A (en) * | 2019-01-02 | 2019-04-12 | 山东科技大学 | Crouch the Underground Space Excavation method of existing tunnel under a kind of soil rock compound stratum |
| CN113654748A (en) * | 2021-10-19 | 2021-11-16 | 山东润龙轴承有限公司 | Hang basket structure amount of deflection monitoring facilities |
-
2008
- 2008-02-26 CN CNA2008100264752A patent/CN101230753A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611114A (en) * | 2019-01-02 | 2019-04-12 | 山东科技大学 | Crouch the Underground Space Excavation method of existing tunnel under a kind of soil rock compound stratum |
| CN113654748A (en) * | 2021-10-19 | 2021-11-16 | 山东润龙轴承有限公司 | Hang basket structure amount of deflection monitoring facilities |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20080730 |