CN205558923U - A unloading pipe for deep tunnel construction - Google Patents
A unloading pipe for deep tunnel construction Download PDFInfo
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- CN205558923U CN205558923U CN201521121862.6U CN201521121862U CN205558923U CN 205558923 U CN205558923 U CN 205558923U CN 201521121862 U CN201521121862 U CN 201521121862U CN 205558923 U CN205558923 U CN 205558923U
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- pipeline section
- blanking pipeline
- tremie pipe
- curve bend
- joint
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Abstract
The utility model discloses an unloading pipe for deep tunnel construction, a serial communication port, including vertical multisection unloading pipeline section that sets up, the adjacent pipeline section certain distance that staggers each other, the bottom of going up a lesson unloading pipeline section is passed through arc elbow pipe and is communicate the top of expecting the pipeline section next coming festival, arc elbow pipe with expect that tie -in's position slant has a down dip next coming festival, bottom at the unloading pipeline section of bottommost sets up ejection of compact hose. Can be according to the tunnel of difference degree of the burying unloading pipeline section quantity of coming adaptation adjustment intercommunication deeply, the nimble use. As long as the length of pipeline section is expected each coming festival in the restriction, can effectively alleviate the tenesmus impulsive force, slow down the tenesmus height, reduce the concrete disintegration.
Description
Technical field
The utility model relates to the tremie pipe in constructing tunnel for concrete discharging, a kind of tremie pipe being applicable to deep tunnel.
Background technology
At present, the blanking of concrete in constructing tunnel, the concrete being typically to be stirred on ground passes through vertical straight tube directly by the Construction traffic filled under concrete to tunnel or trolley.For the consideration of concrete property, in order to ensure the quality of concrete, the free-falling of concrete is highly generally not capable of more than 2 meters.But, in constructing tunnel, its tunnel degree of depth is generally all at 20～30 meters, the most deeper.And existing tremie pipe is all one-body molded, builds tunnel every time and be required for the stretched tremie pipe of the actual grade customization corresponding length according to this tunnel.In order to not allow the concrete being stirred directly drop tens meters, all a buffer platform can be added in the outlet of tremie pipe.But owing to tenesmus is the highest, so occurring that at buffer platform coarse aggregate rebounds at concrete, i.e. the big stone as coarse aggregate rebounds higher, and the little particle bounce such as gravel, cement is relatively low, thus there will be the isolation of concrete.Work progress and the construction quality of two linings are brought very big harmful effect by the concrete after isolation, specific as follows: to affect the pumping construction performance of concrete, cause viscous tank, plugging, affect the duration etc., reduce economic benefit；Affecting the apparent effect of xoncrete structure, there are the phenomenons such as sand streak, aggregate exposure, reinforcing steel bars exposed in concrete surface；Making concrete strength significantly decline, have a strong impact on xoncrete structure bearing capacity, destroy the security performance of structure, serious will result in is done over again, and causes huge economic loss；The homogeneity of concrete is poor, and the contraction causing each position of concrete is inconsistent, is easily generated concrete shrinkage crack.Particularly when constructing concrete floor, owing to concrete disintegration makes the grout layer on top layer thicken, contraction is increased dramatically, and serious cracking phenomenon occurs.Significantly reduce the endurance quality of the concrete such as concrete impervious, freeze proof.Additionally, integrated long length tremie pipe is also difficult to safeguard when blocking, therefore the impact on construction speed is bigger.
Utility model content
The utility model purpose is to provide a kind of it can be avoided that concrete occurs the tremie pipe being applicable to deep tunnel construction of isolation in blanking process.
A kind of tremie pipe for deep tunnel construction described in the utility model, including longitudinally disposed more piece blanking pipeline section, adjacent tubular segments offsets one from another certain distance, the bottom of a upper joint blanking pipeline section is communicated to the top of next joint blanking pipeline section by curve bend, and the position that curve bend is connected with next joint blanking pipeline section tilts obliquely；In the bottom of the blanking pipeline section of bottommost, discharge tube is set.Flexible pipe can swing, and prevents from saving under stop tremie pipe being open to traffic.
The curve bend of first segment blanking pipeline section is communicated in second with the top of blanking pipeline section when using by tremie pipe of the present utility model, the curve bend of second section blanking pipeline section is communicated in the 3rd with the top of blanking pipeline section, and so on, the curve bend of N joint blanking pipeline section is communicated in N+1 with the top of blanking pipeline section, and so on, can adapt to adjust the tremie pipe hop count amount of connection according to the different buried degree in tunnel, use flexibly.As long as limiting the length of each joint blanking pipeline section, can effectively alleviate tenesmus impulse force, slowing down tenesmus height.If blocking occurring at a certain joint blanking pipeline section or curve bend, can carry out disclosing smashing every pipe joint section is suitable for reading, it is achieved quickly process troubleshooting.Can also independent this joint blanking pipeline section of removal, it is to avoid scrapping of whole joint tremie pipe, improve operating efficiency.And the curve bend of each joint blanking pipeline section can act as the effect being once stirred for, it is to avoid concrete occurs segregation phenomenon in blanking process, improves concrete quality greatly.As final section tremie pipe, in order to avoid tremie pipe stops the Other Engineering car of constructing tunnel, tremie pipe tail end is set to flexible pipe.Non-blanking when, it is not necessary in order to avoid stopping that lane removes tremie pipe, it is only necessary to flexible pipe is pulled away from construction lane, decreases the cost of labor of dismounting.
In order to dismount each joint tremie pipe more easily, every two save adjacent tremie pipe all uses the mode of hook to connect.In the two joint blanking pipeline sections up and down of longitudinally adjacent connection, the blanking pipeline section of upper joint arranges the hook projection raised up at its curve bend near the position of port, the blanking pipeline section of lower joint with on save the position corresponding to curve bend of blanking pipeline section the elliptical orifice inserted for curve bend be set, the end of upper joint blanking pipeline section curve bend is inserted in the elliptical orifice of lower joint blanking pipeline section, hooks lower joint blanking pipeline section by hook projection.When connecting use, can be suitably by connected pipeline section firm welding.
In order to increase the steadiness of mounting, the hook projection on the curve bend of described upper joint blanking pipeline section can be the arc flange that circumferencial direction extends.
Being preferably minimized to take up room when being combined by tremie pipe and use, and be more uniformly stressed, structure is more stable.The opening of described curve bend with top elliptical opening in the same direction, is positioned at the same side of blanking pipeline section.
In order to avoid tenesmus is the most excessive, each tremie pipe segment length is no longer than 3 meters and is advisable.
Accompanying drawing explanation
Fig. 1 is tremie pipe segment structure schematic diagram of the present utility model.
Fig. 2 is blanking pipeline section curve bend exit of the present utility model projection schematic diagram.
Fig. 3 is the tremie pipe structural representation at bottommost of the present utility model.
Fig. 4 is that more piece tremie pipe of the present utility model connection uses schematic diagram.
Detailed description of the invention
Tremie pipe of the present utility model is as shown in Figure 1, 2, 3, including longitudinally disposed more piece blanking pipeline section 1, adjacent tubular segments offsets one from another certain distance, the top by next joint blanking pipeline section of curve bend 4 communication channel, the bottom of a upper joint blanking pipeline section 1, the position that curve bend 4 is connected with next joint blanking pipeline section 1 tilts obliquely；In the bottom of the blanking pipeline section 1 of bottommost, discharge tube 6 is set.Top-side at blanking pipeline section 1 has the opening 3 of ellipse, and top 2 opening is the feeding mouth as first segment tremie pipe.Be provided with protruding 5 on the top in the close exit 7 of curve bend, a upper joint tremie pipe is by protruding 5 openings 3 hooking next joint tremie pipe, it is achieved the hook connection of neighbouring blanking pipeline section.More firm in order to mount, protruding 5 make flange, and flange stretches along the circumference in exit 7.Consider based on joint space-efficient, the opening direction of curve bend 7 is arranged consistent with the direction of elliptical openings 3.
During work as shown in Figure 4, by the material receiving port of connection bottom surface, the top concrete of first segment tremie pipe, then according to the tunnel degree of depth, a section mounting tremie pipe, until length arrives the concrete in tunnel and loads on utensil or Construction traffic.Concrete starts tenesmus from first segment tremie pipe, enters second section tremie pipe through first curve bend buffering.Through tenesmus repeatedly be buffered to reach default concrete " loaded " position.The effect that concrete is stirred again is may also operate as each time the when of buffering.
In order to not constructing when tremie pipe do not stop the lane of working region, final section tremie pipe be set to as it is shown on figure 3, tremie pipe tail end connect one joint blanking flexible pipe 6.Flexible pipe 6 is hinge-connection, without blanking when, and can be by pulling open blanking flexible pipe, it is possible in the case of not dismantling whole tremie pipe group, it is to avoid the stop to lane.
Tremie pipe of the present utility model can the most a certain joint tremie pipe or during curve bend blocking, individually the problematic joint of dismounting, reaches the effect of quick troubleshooting.And adapting to the constructing tunnel of different depth, tremie pipe can be reused, it is not necessary to redesign the length of tremie pipe each time for the tunnel degree of depth, cost-effective.
Claims (4)
1. the tremie pipe for deep tunnel construction, it is characterized in that, including longitudinally disposed more piece blanking pipeline section, adjacent tubular segments offsets one from another certain distance, the bottom of a upper joint blanking pipeline section is communicated to the top of next joint blanking pipeline section by curve bend, and the position that curve bend is connected with next joint blanking pipeline section tilts obliquely；In the bottom of the blanking pipeline section of bottommost, discharge tube is set.
Tremie pipe the most according to claim 1, it is characterized in that, in two joint blanking pipeline sections of longitudinally adjacent connection, the blanking pipeline section of upper joint arranges the hook projection raised up at its curve bend near the position of port, the blanking pipeline section of lower joint with on save the position corresponding to curve bend of blanking pipeline section the elliptical orifice inserted for curve bend be set, the end of upper joint blanking pipeline section curve bend is inserted in the elliptical orifice of lower joint blanking pipeline section, hooks lower joint blanking pipeline section by hook projection.
Tremie pipe the most according to claim 2, it is characterised in that described hook projection is the arc flange that circumferencial direction extends.
Tremie pipe the most according to claim 2, it is characterised in that the opening of described curve bend with top elliptical opening in the same direction, is positioned at the same side of blanking pipeline section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521121862.6U CN205558923U (en) | 2015-12-31 | 2015-12-31 | A unloading pipe for deep tunnel construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521121862.6U CN205558923U (en) | 2015-12-31 | 2015-12-31 | A unloading pipe for deep tunnel construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205558923U true CN205558923U (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521121862.6U Active CN205558923U (en) | 2015-12-31 | 2015-12-31 | A unloading pipe for deep tunnel construction |
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| CN (1) | CN205558923U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108265982A (en) * | 2017-12-19 | 2018-07-10 | 上海建工建集团有限公司 | Appts. for transferring ready-mixed concrete and its application construction method |
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2015
- 2015-12-31 CN CN201521121862.6U patent/CN205558923U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108265982A (en) * | 2017-12-19 | 2018-07-10 | 上海建工建集团有限公司 | Appts. for transferring ready-mixed concrete and its application construction method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |