CN101967797A - Settlement-free sand box for civil engineering - Google Patents

Settlement-free sand box for civil engineering Download PDF

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Publication number
CN101967797A
CN101967797A CN 201010299788 CN201010299788A CN101967797A CN 101967797 A CN101967797 A CN 101967797A CN 201010299788 CN201010299788 CN 201010299788 CN 201010299788 A CN201010299788 A CN 201010299788A CN 101967797 A CN101967797 A CN 101967797A
Authority
CN
China
Prior art keywords
sandbox
civil engineering
sleeve
sedimentation
piston
Prior art date
Application number
CN 201010299788
Other languages
Chinese (zh)
Inventor
高纯
刘建民
吴永红
冯星元
弓宏涛
Original Assignee
中建三局建设工程股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中建三局建设工程股份有限公司 filed Critical 中建三局建设工程股份有限公司
Priority to CN 201010299788 priority Critical patent/CN101967797A/en
Publication of CN101967797A publication Critical patent/CN101967797A/en

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Abstract

The invention relates to a settlement-free sand box (9) for civil engineering, comprising a sleeve (1) and a piston (3), wherein the piston (3) can move up and down in the sleeve (1); filler sand is filled between the piston (3) and the sleeve (1); and load larger than the actual load is applied to the sand box (9) for pre-pressing. The settlement-free sand box for civil engineering can be used repeatedly, thereby reducing the pre-pressing workload of heaped load and saving the cost of construction period; in addition, the settlement-free sand box for civil engineering has the advantages of high work efficiency, convenient operation, high reuse rate, environmental protection and the like.

Description

The no sedimentation sandbox of civil engineering
Technical field
The present invention relates to building engineering field, relate in particular to the no sedimentation sandbox of civil engineering.
Background technology
In the construction of highway, railway cast-in-place beam, at present the off-load sandbox of using is under the effect of big load, and early stage, plastic settlement was very big, therefore the falsework template set up finish after, must carry out the safety that support system is checked in precompressed, eliminate plastic strain simultaneously.Do the turn around time that can prolong rack template undoubtedly like this, increase workload, prolong the duration, increase cost.When adopting the construction of scaffold method in engineering, geological condition difference is very little, load is similar, supporting way is identical, this moment, the part engineering began to adopt the part preloading to carry out bridge construction, and at this moment, the plastic settlement of sandbox will become the difficult point of promoting the construction of part preloading.If can there be a kind of plastic strain to may diminish to the sandbox of ignoring, the plastic strain of so whole support system will obtain effective pre-control.On this basis, just can realize adopting the part preloading to carry out bridge construction, so that save the time and the cost of preloading.
In sum,, reduce the workload of piling prepressing, need plasticity support system seldom, and the key of such support system is to need a kind of plastic strain to may diminish to the sandbox of ignoring in order to save duration and cost.
Summary of the invention
In order to solve above-mentioned technical problem, provide a kind of civil engineering with no sedimentation sandbox, its purpose is, under the effect of actual loading, the plastic strain of sandbox be may diminish to ignore.。
The invention provides civil engineering with no sedimentation sandbox 9, comprise sleeve 1 and piston 3, piston 3 can move up and down in sleeve 1, pours into heap sand between piston 3 and the sleeve 1, and the load that sandbox 9 is applied in greater than actual loading carries out precompressed.
Sandbox 9 also comprises fastening unit, and fastening unit is connected between piston 3 and the sleeve 1 and carries out fastening to described sandbox 9.
Fastening unit is a U-bolt 2.
Sleeve 1 is provided with sand export, and the sand export arranged outside has flange 4.
Greater than the load of actual loading 1.5 times of actual loading.
The slit of sandbox 9 is by cotton yarn and water blocking tape sealing.
Sand export has two.
Sandbox 9 is under user mode, and fastening unit is removed.
Civil engineering provided by the invention can be repeatedly used with no sedimentation sandbox, has significantly reduced the precompressed workload of preloading, saves the duration cost; Can solve the similar problem in the building engineering construction field very effectively; Civil engineering provided by the invention has the work efficiency height with no sedimentation sandbox, and is easy to operate, recycling rate of waterused height, advantages such as environmental protection.
Description of drawings
Fig. 1 and Fig. 2 are the sandbox elevation;
Fig. 3 is the sandbox sectional drawing;
Fig. 4 is sandbox top board figure;
Fig. 5 is application example figure.
Description of reference numerals: the 1-sleeve, 2-U type bolt, the 3-piston, 4-sand export flange, the 5-cast-in-situ concrete beam, the 6-template, the 7-support, 8-crossbeam, 9-do not have the sedimentation sandbox, the 10-buttress.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Civil engineering provided by the invention is on the basis of existing sandbox with no sedimentation sandbox, and sandbox is carried out precompressed, and fixes with the U-shaped screw rod, adopts adhesive waterproof tape to seal.Fig. 1 and Fig. 2 have shown the elevation of sandbox.
Civil engineering comprises sleeve 1 and piston 3 with no sedimentation sandbox 9, and piston 3 can move up and down in sleeve 1, pours into heap sand between piston 3 and the sleeve 1, and the load that sandbox 9 is applied in greater than actual loading carries out precompressed.Sandbox 9 also comprises fastening unit, and prepressing units is connected between piston 3 and the sleeve 1 carries out fastening to described sandbox 9.Fastening unit is a U-bolt 2.Sleeve 1 is provided with sand export, and the sand export arranged outside has flange 4.Greater than the load of actual loading 1.5 times of actual loading.The slit of sandbox 9 is by cotton yarn and water blocking tape sealing.Sand export has two.Sandbox 9 is under user mode, and fastening unit is removed.
Fig. 5 embodiment is the cast-in-situ box girder working drawing, at the capital of bottom falsework the precompressed sandbox is installed.Precompressed sandbox construction implementing procedure is as follows:
At first, design sandbox according to the requirement of construction size and load; Carry out sandbox according to design and make, pour into suitable yellow ground or steel sand; With 1.5 times of actual loadings sandbox is carried out precompressed; Carry out fastening with U-bolt to sandbox after the precompressed; With cotton yarn filling sandbox gap, adopt adhesive waterproof tape to seal sand and anti-water seal again; Be carried to the scene, sandbox is installed, removes U-bolt, carries out bridge construction, unloading, form removal.
Respectively above-mentioned flow process is described in detail below.
(1) according to the requirement of construction size and load, designs the technical requirements of sandbox and clear and definite heap sand;
Fig. 5 embodiment determines the size of sandbox and the thickness of required sandbox steel plate according to the load on sandbox top and the size of buttress, and the size of sandbox can determine that the thickness of steel plate can calculate according to national regulation according to the size of pier stud.
(2) sandbox is made, and pours into suitable heap sand;
In upper box body, add cross by design when sandbox is made and strengthen steel plate or fill concrete.
(3) with 1.5 times of actual loadings sandbox is carried out precompressed
Load during precompressed is 1.5 times of actual service load, eliminates the plastic strain of sandbox.
(4) carry out fastening with U-bolt to sandbox
For guaranteeing that the state of the sand after the precompressed can not carried out fastening with U-bolt to sandbox by disturbance in mobile and hoisting process.
(5), sandbox is sealed sand and anti-water seal with cotton yarn and water blocking tape
Can discharge smoothly for the dry sand that guarantees sandbox when unloading inside, require the filling of keeping dry of sand in the sandbox, seal the slit of sandbox, effectively prevent the outflow of sand and entering of the moisture in the environment with cotton yarn and adhesive waterproof tape strictness.
(6) be carried to the scene, sandbox be installed, remove U-bolt, carried out bridge construction, unloading, form removal.
Open the blind flange of sleeve, control the rhythm that shakes out, sand slowly flows out, and makes the sandbox upper plate slowly drop to the appointment elevation.After the off-load, form removal.
Evidence, sandbox is carried out the precompressed of 1.5 times of proof loads, unloading back springback capacity is very little, plastic strain under the actual loading may diminish to ignores, and with U-shaped screw rod fix it for guaranteeing physical size and transportable requirement of sandbox this moment, and seal with adhesive waterproof tape, so just can make things convenient for the transfer of sandbox and the state of sand in can the disturbance sandbox, and the problems such as sediment outflow difficulty of avoiding water into to cause, practical no sedimentation sandbox become.
Those skilled in the art can also carry out various modifications to above content under the condition that does not break away from the definite the spirit and scope of the present invention of claims.Therefore scope of the present invention is not limited in above explanation, but determine by the scope of claims.

Claims (8)

1. a civil engineering is with no sedimentation sandbox (9), comprise sleeve (1) and piston (3), piston (3) can move up and down in sleeve (1), pours into heap sand between piston (3) and the sleeve (1), it is characterized in that the load that described sandbox (9) is applied in greater than actual loading carries out precompressed.
2. civil engineering as claimed in claim 1 is characterized in that with no sedimentation sandbox (9) described sandbox (9) also comprises fastening unit, and described fastening unit is connected between piston (3) and the sleeve (1) fastening to described sandbox (9).
3. civil engineering as claimed in claim 2 is characterized in that with no sedimentation sandbox (9) described fastening unit is U-bolt (2).
4. as any described civil engineering no sedimentation sandbox (9) of claim 1-3, it is characterized in that described sleeve (1) is provided with sand export, the sand export arranged outside has flange (4).
As any described civil engineering of claim 1-3 with no sedimentation sandbox (9), it is characterized in that, be 1.5 times of actual loading greater than the load of actual loading.、
6. as any described civil engineering no sedimentation sandbox (9) of claim 4, it is characterized in that the slit of described sandbox (9) is by cotton yarn and water blocking tape sealing.
7. as any described civil engineering no sedimentation sandbox (9) of claim 4, it is characterized in that described sand export has two.
8. as claim 2 or 3 described civil engineerings no sedimentation sandboxes (9), it is characterized in that described sandbox (9) is under user mode, fastening unit is removed.
CN 201010299788 2010-10-08 2010-10-08 Settlement-free sand box for civil engineering CN101967797A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201010299788 CN101967797A (en) 2010-10-08 2010-10-08 Settlement-free sand box for civil engineering

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201010299788 CN101967797A (en) 2010-10-08 2010-10-08 Settlement-free sand box for civil engineering

Publications (1)

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CN101967797A true CN101967797A (en) 2011-02-09

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103061264A (en) * 2012-12-08 2013-04-24 中铁三局集团有限公司 Method and device for pre-pressing high-position support single column in water

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1364653A1 (en) * 1984-12-04 1988-01-07 Государственный Институт По Изысканиям И Проектированию Мостов "Ленгипротрансмост" Method of mounting the span structure of bridge by sliding-on at the roadway level
KR20090003362U (en) * 2007-11-21 2009-04-10 (주)서린건설 Snowplow sand box bar
CN101424128A (en) * 2008-12-12 2009-05-06 中建三局建设工程股份有限公司 Civil engineering construction flask device
CN201873948U (en) * 2010-10-08 2011-06-22 中建三局建设工程股份有限公司 Prepressing sand box

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1364653A1 (en) * 1984-12-04 1988-01-07 Государственный Институт По Изысканиям И Проектированию Мостов "Ленгипротрансмост" Method of mounting the span structure of bridge by sliding-on at the roadway level
KR20090003362U (en) * 2007-11-21 2009-04-10 (주)서린건설 Snowplow sand box bar
CN101424128A (en) * 2008-12-12 2009-05-06 中建三局建设工程股份有限公司 Civil engineering construction flask device
CN201873948U (en) * 2010-10-08 2011-06-22 中建三局建设工程股份有限公司 Prepressing sand box

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103061264A (en) * 2012-12-08 2013-04-24 中铁三局集团有限公司 Method and device for pre-pressing high-position support single column in water
CN103061264B (en) * 2012-12-08 2015-05-13 中铁三局集团有限公司 Method and device for pre-pressing high-position support single column in water

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