CN201198606Y - Dredge core body concrete structure - Google Patents

Dredge core body concrete structure Download PDF

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Publication number
CN201198606Y
CN201198606Y CNU2007200394738U CN200720039473U CN201198606Y CN 201198606 Y CN201198606 Y CN 201198606Y CN U2007200394738 U CNU2007200394738 U CN U2007200394738U CN 200720039473 U CN200720039473 U CN 200720039473U CN 201198606 Y CN201198606 Y CN 201198606Y
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China
Prior art keywords
concrete
core
steel bars
floating
reinforcing bar
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Expired - Fee Related
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CNU2007200394738U
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李延和
李树林
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李延和
李树林
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Abstract

The utility model relates to a loose-core concrete structure, pertaining to the field of civil engineering. The concrete at the position with smaller stress in the cross-sections of the beam, board, pillar, shear wall, foundation, box beam and other components in the concrete structure of an architecture or a bridge is replaced by a loose-core body, thereby, an overall structure with less concrete consumption, smaller deadweight, less construction cost and tidy on-site block cast is achieved; the loose core body (1) is a cylindrical or prism body (with certain rigidity) made of sorghum stalks, maize stalks, rice straws and other crop stalks dried, compressed, moulded under high temperature and added with thin tree-branches, and is coated with water-proof plastic film (2); the steel bars under the horizontal members of the beam, board, foundation and the like are bent upward to colligate the vertical support steel bars, and the lower part of the support steel bars are used to colligate the horizontally laid steel bars; after the core body is placed, the upper part of the core body is colligated with horizontal anti-floating steel bars and support steel bars to ensure the anti-floating and sidesway-resisting performance; then concrete is cast, on the vertical bars of the shear wall, the pillar and other vertical members, the laid steel bars are horizontally colligated before the core body is laid, horizontal anti-floating steel bars are arranged on the top part of the core body and colligated with the vertical bars, or the anti-floating steel plate is welded; the core body is generally 60-80cm long, arranged in the concrete members by segments, and a 5-10cm gap is arranged between the segments to fill concrete; the area of the cross section of the core body in the cross section of the concrete member is calculated in accordance with Concrete Structure Design Code GB50010-2002.

Description

A kind of thin core body concrete structure
Affiliated technical field
The utility model relates to a kind of thin core body concrete cast-in-situ overall structure that alleviates the concrete structure deadweight.Soon stressed less position concrete substitutes with dredging core body in the concrete structure member cross section, is specially concrete beam, plate, post, wall, basis, pile foundation in the construction work, the concrete beam plate in the bridge engineering, bridge pier, the concrete dam body in the dam etc.; Field of civil engineering.
Background technology
Alleviate the concrete structure deadweight, this is the target that civil engineering field is pursued always.Prefabricated porous plate, T type cut section bar, I-shaped thin webbed girder, I-shaped cross-section post, lattice post, hollow electric pole, pile for prestressed pipe, box-girder etc., with the prefabricated units of the stressed less or inoperative cross section of concrete part concrete cancellation, this is the result of people's long-term endeavour.
Precast prestressed porous plate once was used in the floor structure of the vast urban and rural buildings of China, when this plate is produced in member factory, was shaped by taking out the hole, had reduced the member section concrete amount, had reached the purpose that alleviates deadweight.But owing to be prefabricated units, it is unfavorable to the whole anti-seismic performance in house, the use that in the city, has been under an embargo, and usefulness is being prolonged at no distant date in the rural area of having only economic condition to fall behind.
Precast prestressed box-girder in the bridge construction by being embedded in the shared volume of rubber pneumatic bag in the template reinforcing cage, has reduced concrete amount, after the concrete component form removal of building, bleed off air, take out the capsule bag from box-girder one end opening position, reuse.
The condition that above-mentioned two technology realize is, the production of concrete component must be used special equipment production in precast yard (field), and the member of production must be a both ends open, and after the member installation, its integrality performance of the structure and anti-seismic performance are relatively poor.Wholely at the scene water structure (not staying opening) and then can't accomplish.
In recent years, people develop totally-enclosed GBF thin-wall hollow pipe again, and be about to finished product GBF pipe and be embedded in the template reinforcing cage of concrete component, concreting then, thus realized the minimizing concrete amount, alleviate the cast-in-place hollow plated construction of its deadweight.Yet, (the long φ of 1m 120 pipe market price are about 8~10 yuan because manufacturing GBF pipe cost is higher, place 6 in 200 thick concrete slabs, be that every construction cost per square meter need be spent more more than 50 yuan of RMB of expense, the concrete square amount of saving is only about 20 yuan, both differ 30 yuan, i.e. 30 yuan/m of construction cost rising 2), construction cost is shared higher, therefore, also is difficult to promote the use of for the moment on the construction market now.
In order to alleviate dead load, save concrete amount, the utility model provides a kind of thin core body concrete structure, realizes the job site integral cast-in-situ, thereby guarantees the overall performance and the anti-seismic performance of structure.
Summary of the invention
1. technical problem to be solved
Very big shortcoming of concrete structure is exactly from great, and this is because the unit weight (2500kg/m of concrete own 3) big reason.When methods such as adopting aerating alleviates its unit weight, concrete intensity descends again significantly, therefore, should guarantee the concrete required design strength of concrete structure, alleviate the deadweight of structure again, structure itself also will guarantee it is complete cast-in-place overall structure simultaneously, selects the valency input also will reduce as far as possible in addition, and this is a problem to be solved in the utility model.
2. dredge the composition of core body
Thin core body mainly is by the dry crops stalk, and as compositions such as sorghum stalk, cornstalk, wheat straw, straw, these stalk materials are in light weight, and volume is big, is string, imputrescibility in dry enclosed environment, non-corrosiveness, no noxious gas emission.
Dry agricultural crop straw landfill is in concrete, and imputrescible reason is China's the '30s in last century, the invar material lacks, and the building circle older generation once replaced reinforcing bar to build concrete structure member with bamboo reinforcement, after five more than ten years, chisel concrete, all carbonizations of its bamboo reinforcement.Therefore, the agricultural crop straw that is all string also only can be carbonized as being imbedded in the coagulation body structure, and imputrescibility.
Thin core body is that agricultural crop straws such as kaoliang stalk, cornstalk, wheat straw, straw are dried, by immersion, compression, high-temperature shaping (300~400 ℃), the centre is worn and is put thin branch, oven dry again, make many sections cylinders or prism, and certain degree of hardness is arranged, the plastic sheeting of appearance waterproof, stop the water loss in the concrete, guarantee that simultaneously the thin core body of stalk is not soaked.
3. dredge core body concrete structure technical scheme
Dredging the core body concrete structure is that the stressed concrete less or that do not stress in a kind of member section centre replaces with dredging core body, member itself is stressed still to be born by the concrete and the reinforcing bar of periphery, during concrete pouring construction, in advance in the centre of member section with booster reinforcing bar, anti-floating reinforcing bar with cylindrical or prismatic thin core body colligation fixation, the capable again coagulation body of building.This kernel of section for the structural element of dredging core body when Cross section Design, generally press T shape, the I shaped sections is calculated, T shape, the designing and calculating of I shaped sections is by " Code for design of concrete structures " GB50010-2002 execution.
4. the beneficial effects of the utility model
(1) less because of dredging core body unit weight, replaced the part concrete amount after, solved concrete structure to a certain extent from great problem.
(2) dredge the core body concrete structure and water structure, guaranteed the globality and the anti-seismic performance of structure for whole.
(3) thin core body concrete slab, the shear wall structure member of Jian Zaoing has sound insulation, insulation, heat insulation good physical.
(4) make agricultural crop straw find useful part, make it no longer become discarded object, or burned in a large number, thereby influence the traffic environment of short-term and long-term ecological environment.
(5) save concrete amount, save construction costs, the cement production enterprise output of Beijing South Maxpower Technology Co. Ltd's consumption, heavily contaminated is reduced, play the effect of energy-saving and emission-reduction on the macroscopic view.
Description of drawings
Fig. 1 is the thin core body figure of cylindrical cross-section.
Fig. 2 is the thin core body figure in prismatic cross section.
Fig. 3 dredges core body concrete slab sectional view.
Fig. 4 dredges core body concrete beam sectional view.
Fig. 5 dredges the square column section figure of core body concrete.
Fig. 6 dredges core body concrete rectangular column sectional view.
Fig. 7 dredges core body concrete shear force wall sectional view.
Fig. 8 dredges core body coagulation body basis sectional view.
Fig. 9 dredges core body concrete large volume basis sectional view.
Figure 10 dredges the complete cast-in-place box-girder sectional view of core body concrete.
(1) is that stalk is dredged core body among the figure, (2) be plastic sheeting, (3) be thin branch, (4) are concrete slabs, and (5) are concrete beam, (6) be the square post of concrete, (7) be coagulation body rectangular column, (8) are concrete wall, and (9) are concrete foundations, (10) be concrete large volume basis, (11) are concrete boxlike beams.
The specific embodiment
1. dredge the preparation of core body
That Fig. 1,2 is respectively is cylindrical, the thin core body in prismatic cross section.When the usefulness sorghum stalk, when cornstalk is done to dredge core body (1), after it is dried, general directly it is bundled into cylindrical with cord or iron wire, or become prismatic with 0.3 thick iron sheet hoop hoop, length is cut into 60~80cm, the centre is put 4~5 thin branches (3) into, uses plastic sheeting (2) parcel again, has promptly formed and has dredged the core body finished product.When doing to dredge core body (1), after it is dried, be soaked in water earlier 24 hours with straw, wheat straw, after softening, put into two half slot shapes or square groove shape and add the mould that the steel sheet of cover plate is welded into, the centre is worn and is put 4~5 thin branches (3), with bolt mould is pressurizeed, insert again in the baking cabinet, be heated to 300~400 ℃, make its setting, after the cooling of offeing for sale, add and wrap up in plastic sheeting parcel (2), dredge the core body finished product.Dredge the core body sectional dimension, TV structure member section size and decide, generally round diameter is got 6~15cm, and the square length of side is got 15~20cm, length 60~80cm.
2. dredge the core body concrete structure
Fig. 3~10 are respectively member section figure such as dredging core body concrete structure plate, beam, post, wall, basis, box-girder.Introduce earlier and dredge the total arrangement principle of core body, respectively a certain structural element is done concrete the layout again and introduce.
Dredge the big or small TV structure member section size of core body and decide; be divided into single thin core body and put method and a plurality of thin core body combination storing method, generally protection, the constraint thickness of the coagulation body pressurized height that should calculate according to the cross section and reinforcing bar necessity are determined the cross sectional shape and the size of member section size and supporting thin core body.Dredge core body and place one section along the per 60~80cm of concrete component length, apart from fill concrete, so thin core body concrete inner structure is a space structures to interval 5~10cm, helps the Stress Transfer and the Stability Analysis of Structures of structure itself as the space between section and the section.In the scope of 30~50cm left and right sides at member two ends, do not arrange thin core body, this also is to guarantee the structure internal force transmission.The placement of dredging core body is fixed by handling reinforcement and anti-floating reinforcing bar, when preventing concreting, and core body skew or come-up.
Fig. 3 dredges the core body concrete slab, and thickness of slab is generally done thin core body concrete structure more than 10cm just meaningful.Plate (4) is by the one-way slabs design.The T section designing and calculating, computational methods are by " Code for design of concrete structures " GB50010-2002.If thickness of slab is 12cm, dredge core diameter 6cm, 3cm is respectively got on the upper and lower edge of a wing of coagulation body, plate cross section, and the clear spacing between two core bodys is got 3cm, and promptly the narrowest place of web is 3cm.Dredging core body (1) top floats with transverse horizontal reinforcing bar control core body, this reinforcing bar also claims the anti-floating reinforcing bar, the anti-floating reinforcing bar links to each other with the handling reinforcement of core body both sides, longitudinal reinforcement colligation at the bottom of handling reinforcement and the plate together, buoyancy as core body is bigger, the wire nail stickfast of longitudinal reinforcement and this template then links to each other with iron wire with steel form and to tighten, then concreting.
Fig. 4 dredges core body coagulation body beam, and is the same with plate, is all flexural member, and the normal section design is pressed T section and calculated, and the sloping section shearing resistance will be calculated by the I shaped sections, and specific practice is with reference to GB50010-2002.Because the internal force of beam is bigger, vertical muscle is thicker in the beam, therefore, bottom flange and web must have enough thickness on the concrete of beam, the general bottom flange value that goes up is about 10~15cm, one coxostermum thickness is no less than 5cm, and the definite of concrete numerical value should be as the criterion and suitably amplification by the standard calculated value, and then selects the core body sectional dimension.The construction measure that core body is installed is still with anti-floating with guarantee that off normal is not a principle, and way is with the way of dredging the core concrete slab.
Fig. 5, the 6th dredges square post of core body concrete (6) and rectangular column (7), and as bending component, concrete compression area is pressed the column section deduction and dredged the calculating of core body cross section, and all the other are pressed GB50010-2002I shaped sections post and calculate.Thin core body periphery in the post is firm with shelving in reinforcing bar and the post vertical muscle colligation with handling reinforcement and bottom, and muscle colligation or firm welding are indulged with in anti-floating reinforcing bar or anti-floating steel plate and the post in the top of dredging core body, guarantee its concreting after core body off normal is not floating.
Fig. 7 dredges core body concrete wall (8), and its thin core design, installation constitution and base for post are originally identical.
Fig. 8 dredges core body concrete foundation (9), and the grade beam in the basis is by dredging design of core body concrete beam and construction, and outrigger base is equally handled with cast-in-place plate.
Fig. 9 dredges core body concrete large volume basis (10), because of its cross section bigger, it is also bigger to dredge core body (1) volume, in concreting process, take into full account of the influence of concrete lateral pressure to the displacement of core body, simultaneously its buoyancy is also bigger, thus handling reinforcement, when its rigidity of anti-floating reinforcing bar is difficult to guarantee, available shaped steel as angle steel is as the locating structure measure of core body (1).
Figure 10 dredges core body concrete boxlike beam (11), and its technical measures are the same with thin core body concrete beam, no longer describes in detail.

Claims (1)

1. thin core body concrete structure, this structure is characterized in that the beam of concrete building, plate, post, wall, the basis, pile foundation, concrete beam plate in the bridge engineering, bridge pier, stressed less core space position, the cross section of basic building blocks such as the concrete dam body in the dam, pre-buried lighter thin core body substitutes the part volume of concrete, the core body of dredging core body is by agricultural crop straw (1), the centre is worn and is put thin branch (3), the plastic sheeting (2) of wrapping up in waterproof is outward formed, thin core body is divided into cylinder and prism, a section is arranged in the member to be poured, core body iron wire and booster reinforcing bar, spacing reinforcing bar binding of anti-floating or steel plate weld together, the booster reinforcing bar, reinforcing bar in spacing reinforcing bar and the member or the template of building are fixedly connected, after concreting is solidified, the cavity body structure of formation rule in concrete component.
CNU2007200394738U 2007-06-07 2007-06-07 Dredge core body concrete structure Expired - Fee Related CN201198606Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007200394738U CN201198606Y (en) 2007-06-07 2007-06-07 Dredge core body concrete structure

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101824863A (en) * 2010-04-21 2010-09-08 中南大学 Concrete shear wall
CN104878953A (en) * 2015-05-07 2015-09-02 成都聚智工业设计有限公司 Building supporting structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101824863A (en) * 2010-04-21 2010-09-08 中南大学 Concrete shear wall
CN104878953A (en) * 2015-05-07 2015-09-02 成都聚智工业设计有限公司 Building supporting structure

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C53 Correction of patent for invention or patent application
TR01 Transfer of patent right

Effective date of registration: 20091113

Address after: Room 1808, six building 200, Zhongshan North Road, Nanjing, Jiangsu, zip code: 210009

Co-patentee after: Li Shulin

Patentee after: Li Yan He

Co-patentee after: Yuan Aimin

Address before: Room 1808, six building 200, Zhongshan North Road, Nanjing, Jiangsu, zip code: 210009

Co-patentee before: Li Shulin

Patentee before: Li Yan He

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: INVENTOR; FROM: LI YANHE; LI SHULIN TO: LI YANHE; LI SHULIN; YUAN AIMIN

CB03 Change of inventor or designer information

Inventor after: Li Yan He

Inventor after: Li Shulin

Inventor after: Yuan Aimin

Inventor before: Li Yanhe

Inventor before: Li Shulin

C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090225

Termination date: 20110607