CN106223339A - Ultra-deep foundation pit concrete pump down support system - Google Patents
Ultra-deep foundation pit concrete pump down support system Download PDFInfo
- Publication number
- CN106223339A CN106223339A CN201610554634.0A CN201610554634A CN106223339A CN 106223339 A CN106223339 A CN 106223339A CN 201610554634 A CN201610554634 A CN 201610554634A CN 106223339 A CN106223339 A CN 106223339A
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- Prior art keywords
- pump line
- pump
- foundation ditch
- ultra
- support unit
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
nullA kind of ultra-deep foundation pit concrete pump down support system that the present invention provides，Including multiple standard section of tower cranes、Multiple pump line well word fixed mounts、Passage、Pump machine、Pump line and tower crane base，Tower crane base is arranged on the bottom of foundation ditch，Multiple standard section of tower cranes are fixedly installed in tower crane base composition support unit successively，The height of support unit is not less than the degree of depth of foundation ditch，Support unit is connected with the edge of foundation ditch by passage，Pump machine is arranged on the edge of foundation ditch，Pump line is connected with pump machine and passes sequentially through passage and support unit and is connected with the bottom of foundation ditch，Pump line is fixedly installed with support unit by multiple pump line well word fixed mounts respectively，Its form supported by using standard section of tower crane to make，Instead of the scheme using the steel pipe scaffold that difficulty is higher to support when running into deep foundation ditch concrete pumping in work progress，Efficiently solve the problems referred to above，Guarantee is provided for concreting.
Description
Technical field
The present invention relates to technical field of building construction, particularly a kind of ultra-deep foundation pit concrete pump down support system.
Background technology
Pour concrete difficulty of construction under ultra-deep foundation pit relatively big, relate to many factors, select a kind of safe and reliable to pour mode
Method is relatively difficult, and conventional steel pipe scaffold support system quantities is big, and difficulty of construction is big, and danger coefficient is high, attachment complexity.
Summary of the invention
In order to solve above-mentioned technical problem, and providing a kind of ultra-deep foundation pit concrete pump down support system, it passes through
Use standard section of tower crane to make the form supported, instead of and use difficulty higher when work progress runs into deep foundation ditch concrete pumping
Steel pipe scaffold support scheme, efficiently solve the problems referred to above, provide guarantee for concreting.
A kind of ultra-deep foundation pit concrete pump down support system that the present invention provides, including multiple standard section of tower cranes, many
Individual pump line well word fixed mount, passage, pump machine, pump line and tower crane base, described tower crane base is arranged on the bottom of described foundation ditch, institute
Stating multiple standard section of tower crane and be fixedly installed in described tower crane base composition support unit successively, the height of described support unit is not
Less than the degree of depth of described foundation ditch, described support unit is connected with the edge of described foundation ditch by described passage, and described pump machine is arranged
At the edge of described foundation ditch, described pump line is connected with described pump machine and passes sequentially through described passage and described support unit and institute
The bottom stating foundation ditch is connected, and described pump line sets by multiple described pump line well word fixed mounts and described support unit are fixing respectively
Put.
Further, also including adhering to frame and anchor support, described attachment frame is nested with at described support unit logical with described
The lower section of junction, road, described attachment frame is connected by described anchor support is fixing with the sidewall of described foundation ditch.
Further, multiple described pump line well word fixed mounts are fixing with described support unit employing fastener to be connected, and connects
Place uses flexible material parcel.
Further, described pump line well word fixed mount includes multiple steel pipe, multiple described steel pipes two-by-two one group be arranged in parallel
Composition groined type shape also fixing with described support unit is connected, and junction uses flexible material to wrap up.
Further, described pump line forms return bend in the bottom of described foundation ditch.
Further, described return bend includes the first pump line, the second pump line, the 3rd pump line, the 4th pump line, the 5th pump line
With the 6th pump line, described first pump line is arranged straight down, and described first pump line extends to the right the second pump line forming semicircle shape,
Described second pump line extends formation the 3rd pump line, described 3rd pump line the most horizontal-extending formation the 4th pump line, institute straight up
State the 4th pump line straight down extend formation the 5th pump line, described 5th pump line the most horizontal-extending formation the 6th pump line, described
The low spot of the second pump line is higher than described 6th pump line.
Further, described second pump line and described 6th pump line bottom are provided with cushion pad.
Further, described passage includes steel pipe skeleton, support beam and safety net, the two ends of described support beam respectively with institute
Stating the fixing connection in edge of support unit and described foundation ditch, described steel pipe skeleton is arranged in described support beam, described safety net
Length direction along described support beam is fixedly installed on described steel pipe skeleton.
Further, the fixed connection place, edge of described support beam and described foundation ditch is provided with anchor, described anchoring
Device includes that multiple spiral, multiple described spirals become matrix arrangement.
Further, multiple described spirals all embed concrete cushion at least 500 millimeters.
In sum, a kind of ultra-deep foundation pit concrete pump down support system that the present invention provides is compared with prior art
It has the advantage that into, it, by using standard section of tower crane to make the form that supports, instead of and run into deep base in work progress
The scheme using the steel pipe scaffold that difficulty is higher to support during the concrete pumping of hole, efficiently solves the problems referred to above, for concrete
Pour and provide guarantee；The sidewall of whole support unit with foundation ditch is fixedly connected, strengthens the peace of support unit further
Quan Xing；Use the structure of return bend, allow for high drop concrete to the impulsive force of bend pipe bottom pump line, therefore at the bottom of pump line
Portion arranges return bend, plays protection pump line, reduces concrete impulsive force, prevents the effect of plugging.
Accompanying drawing explanation
The overall structure schematic diagram of a kind of ultra-deep foundation pit concrete pump down support system that Fig. 1 provides for the present invention；
The pump line well word fixed mount peace of a kind of ultra-deep foundation pit concrete pump down support system that Fig. 2 provides for the present invention
Assembling structure schematic diagram；
In figure:
1, standard section of tower crane；2, pump line well word fixed mount；3, passage；4, pump machine；
5, pump line；6, tower crane base；7, support unit；8, attachment frame；
9, anchor support；10, return bend；11, anchor；21, fastener；
22, steel pipe；31, steel pipe skeleton；32, support beam；33, safety net；
101, the first pump line；102, the second pump line；103, the 3rd pump line；
104, the 4th pump line；105, the 5th pump line；106, the 6th pump line；
107, cushion pad；111, spiral.
Detailed description of the invention
With specific embodiment, the present invention is described in further details below in conjunction with the accompanying drawings:
As shown in Fig. 1 and Tu, a kind of ultra-deep foundation pit concrete pump down support system that the present invention provides, including multiple
Standard section of tower crane 1, multiple pump line 5 well word fixed mount 2, passage 3, pump machine 4, pump line 5 and tower crane base 6, tower crane base 6 is arranged on
The bottom of foundation ditch, multiple standard section of tower cranes 1 are fixedly installed in tower crane base 6 composition support unit 7 successively, support unit 7
Highly not less than the degree of depth of foundation ditch, support unit 7 is connected with the edge of foundation ditch by passage 3, and pump machine 4 is arranged on the limit of foundation ditch
Edge, pump line 5 is connected with pump machine 4 and passes sequentially through passage 3 and support unit 7 is connected with the bottom of foundation ditch, and pump line 5 leads to respectively
Cross multiple pump line 5 well word fixed mount 2 to be fixedly installed with support unit 7, its form supported by using standard section of tower crane 1 to make,
Instead of the scheme of steel pipe 22 scaffold support that employing difficulty is higher when running into deep foundation ditch concrete pumping in work progress, have
Effect solves the problems referred to above, provides guarantee for concreting.
In a preferred embodiment, also including adhering to frame 8 and anchor support 9, attachment frame 8 is nested with at support unit 7
With the lower section of passage 3 junction, attachment frame 8 is connected, by whole support unit 7 by anchor support 9 is fixing with the sidewall of foundation ditch
It is fixedly connected with the sidewall of foundation ditch, strengthens the safety of support unit 7 further.
In a preferred embodiment, multiple pump line 5 well word fixed mounts 2 and support unit 7 use fastener 21 fixing even
Connect, and junction uses flexible material parcel, it is ensured that be on the premise of being connected firmly, it is ensured that the connection reliability of connecting portion, logical
Spending the use time that flexible material parcel can ensure to connect, pump line 5 well word fixed mount 2 includes multiple steel pipe 22, multiple steel pipes 22
One group of composition groined type shape fixing with support unit 7 being connected, lower cost for material of be arrangeding in parallel two-by-two, and it is applicable to various executing
Work is on-the-spot.
In a preferred embodiment, pump line 5 forms return bend 10 in the bottom of foundation ditch, and return bend 10 includes the
One pump line the 101, second pump line the 102, the 3rd pump line the 103, the 4th pump line the 104, the 5th pump line 105 and the 6th pump line 106, the first pump
Pipe 101 is arranged straight down, and the first pump line 101 extends to the right the second pump line 102 forming semicircle shape, and the second pump line 102 is vertical
Upwardly extending formation the 3rd pump line 103, the 3rd pump line 103 the most horizontal-extending formation the 4th pump line 104, the 4th pump line 104 erects
Directly it is downwardly extending the 5th pump line 105, the 5th pump line 105 the most horizontal-extending formation the 6th pump line 106, the second pump line 102
Low spot higher than the 6th pump line 106, the second pump line 102 and the 6th pump line 106 bottom are provided with cushion pad 107, use this
Kind of structure, allows for high drop concrete to the impulsive force of bend pipe bottom pump line 5, therefore arranges return bend bottom pump line 5
10, play protection pump line 5, reduce concrete impulsive force, prevent the effect of plugging.
In a preferred embodiment, passage 3 includes steel pipe 22 skeleton 31, support beam 32 and safety net 33, support beam
The two ends of 32 are fixing with the edge of support unit 7 and foundation ditch respectively to be connected, and steel pipe 22 skeleton 31 is arranged in support beam 32, safety
Net 33 is fixedly installed on steel pipe 22 skeleton 31 along the length direction of support beam 32, and the edge of support beam 32 and foundation ditch is fixing to be connected
Place is provided with anchor 11, and anchor 11 includes multiple spiral 111, and multiple spirals 111 become matrix arrangement, many
Individual spiral 111 all embeds concrete cushion at least 500 millimeters, it is ensured that installation strength is enough, it is ensured that safety.
The tower crane base of Construction in Preparatory Stage and standard section of tower crane need to judge whether to strengthen tower crane standard according to field condition
Joint, the foundation platform of tower crane base should ensure that enough service times after concreting, and general more than 7 days, its intensity should reach
To cap design of pile intensity more than 80% can implement the installation of standard section of tower crane, and standard section of tower crane uses tower crane with tower crane base
Lifting, on-the-spot standard section of tower crane must reach enough height, install tower crane base and standard section of tower crane, tower crane according to field condition
Attachment making and passage set up the anchoring that according to field condition, attachment point need to be carried out.Concrete condition according to job site
Choice arrangement pump machine and pump line, arrange security protection, standby enough pump line elbows with prevent pump line construction plugging time pour between
The cold seam of break time oversize formation, revolution setting bottom pump line is arranged by last emphasis, it is contemplated that high drop concrete is to pump
The impulsive force of bend pipe bottom pipe, therefore return bend is set bottom pump line, play protection pump line, reduce concrete impulsive force, anti-
Only the effect of plugging, ultimately forms the system supported with standard section of tower crane for pump line.
Situation below for two kinds of easy pluggings enumerates two kinds of solutions: one, prevent coagulation by adjustment match ratio
Soil plugging in pumping determines the suitable ratio of mud and water consumption, and the cement consumption of pump concrete typically cannot be less than 300 kilograms often
Cubic meter, and indices should meet " portland cement, Portland cement " (GBJI75 1992) and " slag portland
Cement, Portland pozzolana cement, Portland fly ash cement " (GBJl344 1992) standard, the maximum ratio of mud is 0.6,
Typically preferably controlling in 0.4～0.6 relatively good, the water consumption of concrete according to slump requirement, and should be come really with reference to aggregate grading
Fixed, if meeting that the slump requires and water consumption is excessive, it is easy to during pump concrete, produce bleeding isolation and block up
Pipe, now should adjust the slump by improving aggregate grading, increasing additive and admixture.The minimum cement of pump concrete
Consumption one-level should meet the requirements, to ensure the pumpability of concrete.Two, grading of aggregates and sand coarse aggregate ratio is unreasonable causes this feelings of plugging
Condition solves using the following method, 1. improves the grating of sandstone and adjusts sand coarse aggregate ratio, and coarse aggregate preferably selects ganoid circle or approximation
Circular aggregate, cobble is better than rubble, and in rubble, faller gill shape stone contents should be less than 5%；The grating of coarse aggregate directly affects
Voidage and sand coarse aggregate ratio, thus affect the pumpability of concrete, general conventional 5～25mm and the continuous grading of 5～40mm；2. to carefully
The requirement of aggregate, preferably with the medium sand that modulus of fineness is 2.5～3.2；15% is should be greater than, if can reach by the sand of the sieve aperture of 0.315
15%～30% is optimal；Having good grating, voidage is little, and coarse sand voidage is big, and pumpability is poor；Sand grains is meticulous, bleeding
Increasing, concrete produces drying shrinkage, and pumping resistance is big.As there is plugging because fine aggregate can not meet pumping requirements；Can pass through
The method such as adjustment cement consumption, sand coarse aggregate ratio, gradation of coarse aggregate of improving, interpolation additive is solved；3. the sand coarse aggregate ratio of pump concrete
Requirement, the sand coarse aggregate ratio of pump concrete is the most relevant with stone kind, maximum particle diameter, the grating of sand and cement consumption.Pumped concrete
The sand coarse aggregate ratio of soil typically should control 40%～50%, and sand coarse aggregate ratio specifically can adjust according to practical situation, uses coarse aggregate suitably to increase
Big sand coarse aggregate ratio, uses fine sand then to reduce sand coarse aggregate ratio.Rule of thumb, the sand coarse aggregate ratio general control of medium sand is 38%～45%, and fine sand or spy are thin
The sand coarse aggregate ratio of sand is the most suitable with 32%～38%.
Revolution setting bottom pump line is arranged by last emphasis, it is contemplated that high drop concrete is to bend pipe bottom pump line
Impulsive force, therefore return bend is set bottom pump line, play protection pump line, reduce concrete impulsive force, prevent the effect of plugging.
The above, only presently preferred embodiments of the present invention, not in order to limit the present invention, every skill according to the present invention
Any trickle amendment, equivalent and the improvement that above example is made by art essence, should be included in technical solution of the present invention
Protection domain within.
Claims (10)
1. a ultra-deep foundation pit concrete pump down support system, it is characterised in that include multiple standard section of tower crane (1), many
Individual pump line well word fixed mount (2), passage (3), pump machine (4), pump line (5) and tower crane base (6), described tower crane base (6) is arranged
In the bottom of described foundation ditch, multiple described standard section of tower cranes (1) are fixedly installed on successively in described tower crane base (6) and form support
Unit (7), the height of described support unit (7) passes through described passage not less than the degree of depth of described foundation ditch, described support unit (7)
(3) edge with described foundation ditch is connected, and described pump machine (4) is arranged on the edge of described foundation ditch, described pump line (5) and described pump machine
(4) it is connected and passes sequentially through described passage (3) and be connected with the bottom of described foundation ditch with described support unit 7, described pump line
(5) it is fixedly installed with described support unit (7) by multiple described pump lines well word fixed mount (2) respectively.
A kind of ultra-deep foundation pit concrete pump down support system the most according to claim 1, it is characterised in that also include
Attachment frame (8) and anchor support (9), described attachment frame (8) is nested with in described support unit (7) and described passage (3) junction
Lower section, described attachment frame (8) is fixed by the sidewall of described anchor support (9) and described foundation ditch and is connected.
A kind of ultra-deep foundation pit concrete pump down support system the most according to claim 1 and 2, it is characterised in that many
Individual described pump line well word fixed mount (2) is fixing with described support unit (7) employing fastener (21) to be connected, and junction uses flexibility
Material wraps up.
A kind of ultra-deep foundation pit concrete pump down support system the most according to claim 3, it is characterised in that described pump
Pipe well word fixed mount (2) includes multiple steel pipe (22), multiple described steel pipes (22) one group of composition groined type shape that be arranged in parallel two-by-two
And fixing with described support unit (7) is connected, junction uses flexible material to wrap up.
A kind of ultra-deep foundation pit concrete pump down support system the most according to claim 1 and 2, it is characterised in that institute
State pump line (5) and form return bend (10) in the bottom of described foundation ditch.
A kind of ultra-deep foundation pit concrete pump down support system the most according to claim 5, it is characterised in that described time
Turning head (10) includes the first pump line (101), the second pump line (102), the 3rd pump line (103), the 4th pump line (104), the 5th pump
Pipe (105) and the 6th pump line (106), described first pump line (101) is arranged straight down, and described first pump line (101) is prolonged to the right
Stretching the second pump line (102) forming semicircle shape, described second pump line (102) extends formation the 3rd pump line (103), institute straight up
Stating the 3rd pump line (103) the most horizontal-extending formation the 4th pump line (104), described 4th pump line (104) extends shape straight down
Become the 5th pump line (105), described 5th pump line (105) the most horizontal-extending formation the 6th pump line (106), described second pump line
(102) low spot is higher than described 6th pump line (106).
A kind of ultra-deep foundation pit concrete pump down support system the most according to claim 6, it is characterised in that described the
Two pump lines (102) and described 6th pump line (106) bottom are provided with cushion pad (107).
A kind of ultra-deep foundation pit concrete pump down support system the most according to claim 1 and 2, it is characterised in that institute
State passage (3) and include steel pipe skeleton (31), support beam (32) and safety net (33), the two ends of described support beam (32) respectively with institute
Stating the fixing connection in edge of support unit (7) and described foundation ditch, described steel pipe skeleton (31) is arranged in described support beam (32),
Described safety net (33) is fixedly installed on described steel pipe skeleton (31) along the length direction of described support beam (32).
A kind of ultra-deep foundation pit concrete pump down support system the most according to claim 8, it is characterised in that described
The fixed connection place, edge of support beam (32) and described foundation ditch is provided with anchor (11), and described anchor (11) includes multiple
Spiral (111), multiple described spirals (111) become matrix arrangement.
A kind of ultra-deep foundation pit concrete pump down support system the most according to claim 9, it is characterised in that multiple
Described spiral (111) all embeds concrete cushion at least 500 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610554634.0A CN106223339B (en) | 2016-07-14 | 2016-07-14 | Ultra-deep foundation pit concrete pumps downwards support system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610554634.0A CN106223339B (en) | 2016-07-14 | 2016-07-14 | Ultra-deep foundation pit concrete pumps downwards support system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106223339A true CN106223339A (en) | 2016-12-14 |
| CN106223339B CN106223339B (en) | 2018-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610554634.0A Expired - Fee Related CN106223339B (en) | 2016-07-14 | 2016-07-14 | Ultra-deep foundation pit concrete pumps downwards support system |
Country Status (1)
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| CN (1) | CN106223339B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108560556A (en) * | 2018-05-22 | 2018-09-21 | 北京六建集团有限责任公司 | A kind of deep foundation ditch concrete pumping system and its construction method |
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| CN104895331A (en) * | 2015-05-26 | 2015-09-09 | 中国建筑第八工程局有限公司 | Concrete downward ultra-deep combined pumping method and device |
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2016
- 2016-07-14 CN CN201610554634.0A patent/CN106223339B/en not_active Expired - Fee Related
Patent Citations (5)
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| JPS6290414A (en) * | 1985-10-15 | 1987-04-24 | Kokudo Kaihatsu Gijutsu Kenkyu Center | Method and apparatus for concreting work |
| JP2008267051A (en) * | 2007-04-24 | 2008-11-06 | Kajima Corp | Method and facility for placing concrete |
| CN102493457A (en) * | 2011-12-07 | 2012-06-13 | 中国建筑第八工程局有限公司 | Extra-deep downward concrete pumping system |
| CN104863158A (en) * | 2015-05-25 | 2015-08-26 | 中国建筑第八工程局有限公司 | Super-deep and downward concrete conveying system along vertical structure |
| CN104895331A (en) * | 2015-05-26 | 2015-09-09 | 中国建筑第八工程局有限公司 | Concrete downward ultra-deep combined pumping method and device |
Non-Patent Citations (1)
| Title |
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| 钱海波等: "上海世茂深坑酒店混凝土超深一溜到底施工技术", 《施工技术》 * |
Cited By (1)
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| CN108560556A (en) * | 2018-05-22 | 2018-09-21 | 北京六建集团有限责任公司 | A kind of deep foundation ditch concrete pumping system and its construction method |
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| CN106223339B (en) | 2018-08-17 |
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