CN103088844A - Reinforced concrete inspection well whole prefabricated hoisting construction method - Google Patents
Reinforced concrete inspection well whole prefabricated hoisting construction method Download PDFInfo
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- CN103088844A CN103088844A CN2013100667364A CN201310066736A CN103088844A CN 103088844 A CN103088844 A CN 103088844A CN 2013100667364 A CN2013100667364 A CN 2013100667364A CN 201310066736 A CN201310066736 A CN 201310066736A CN 103088844 A CN103088844 A CN 103088844A
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Abstract
The invention relates to a construction method for an inspection well, in particular to a reinforced concrete inspection well whole prefabricated hoisting construction method. The method comprises that a formwork of a base plate is firstly erected, then reinforcing steel bars of the base plate are bound, finally concrete is poured on the base plate and burrs need to be removed thoroughly between the reinforcing steel bars in the inner circle and the outer circle; reinforcing steel bars of a well body are bound through the reserved bars of the base plate, after binding, a crane hoists inner steel formworks in the crane with cooperation of manual power, outer steel formworks are installed, finally the concrete is poured, after the formworks are disassembled, the formworks are wound by plastic thin films and water is sprayed on the formworks to cure the formworks; and a drawing method of double cross is adopted in hoisting process. Compared with the prior art, the reinforced concrete inspection well whole prefabricated hoisting construction method has the advantages of effectively solving the quality problem caused by insufficient construction space, greatly improving work efficiency, shortening work period, having good social benefit and economic benefit and being wide in application space in concrete inspection well engineering and high in popularization value.
Description
(1) technical field
The present invention relates to a kind of job practices of manhole, particularly the integral prefabricated construction method for hanging of a kind of steel concrete manhole.
(2) background technology
Cast-in-situs type steel concrete manhole is adopted in the tradition construction, and construction space is limited, does not guarantee quality, the construction of the lower step operation of impact, and efficient is low; General lifting can not be moved the disposable successful installation of heavy concrete inspection well repeatedly, the effort of taking a lot of work.
(3) summary of the invention
The present invention is in order to make up the deficiencies in the prior art, provide a kind of efficiency of construction high, install accuracy rate high, shorten the construction period, cost is low, improved entity quality and impression quality, solved the steel concrete manhole integral prefabricated construction method for hanging of construction space to quality influence.
The present invention is achieved through the following technical solutions:
The integral prefabricated construction method for hanging of a kind of steel concrete manhole is characterized in that: comprise the following steps:
(1), the base plate template is installed and reinforcing: the base plate template machines rear brush release agent, steadily is placed on the sclerosis of plastic sheeting on the ground, inserts little section reinforcing bar on base plate mould four right-angle sides;
(2), base plate steel bar binding, build and maintenance: during the colligation base plate, lower floor's reinforcing bar paves with separator, erect with stirrup between the baseplate reinforcing bar levels, in casting process, vibrating spear in time vibrates, to fully vibrate to the inboard property at parts of edges and corners of template, build and use the plastic sheeting covering curing after completing, to carrying out dabbing between the inner and outer ring reinforcing bar;
(3), well bore reinforcing bar binding: according to the base plate reserving rib, fix the perpendicular muscle of well bore reinforcing bar, first fixing interior ring well body erects muscle, perpendicular muscle is fixed on the base plate reserved steel bar, after a circle colligation is completed, is inserted in the ring muscle from well head, first ring muscle is from close base plate colligation, after the perpendicular muscle of interior ring and the colligation of ring muscle are completed, colligation outer shroud reinforcing bar, step is identical with interior ring;
(4), interior outer steel mould is installed: first internal mold is sling to the reinforcing bar top, slow decreasing, internal mold is put in the reinforcing cage ring, before external mold was installed, on the outer shroud reinforcing bar, at first external mold became two semicircular body to template assembly when installing the separator colligation, first half is leaned against on the reinforcing cage outer shroud, by second half steel form, then manually adjust again, reinforce with screw at two semicircular body edge joint positions;
(5), the manhole body builds: during concreting, highly according to the well chamber determine to build and vibrate pass, vibrating spear will fully vibrate;
(6), form removal and finished product protection: before taking off internal mold, fixing screw is all backed out, tangle internal mold with crane, slowly sling, when taking off external mold, between semicircle, screw twists off connecting, and first takes off half, take off again second half, timely watering after the demoulding is completed, and with plastic sheeting, well bore is wound up, carry out maintenance;
(7), inspect for acceptance: manhole has free from flaw with it, and is thick to the manhole borehole wall, the preformed hole dimensional gaughing;
(8), lifting a: steel hoop is enclosed within on circular inspection well well body, symmetric system enters two cable wind ropes on steel hoop, center on four limits of circular precast inspection well base plate, direction is for pointing to the direction in the center of circle, draw respectively vertical line in order to corresponding with drawn vertical crossed lines on bed course, with two wire rope, two ends are equipped with the U-shaped button, two ends U-shaped deduction of points is not buckled on the suspension ring of precast inspection well, crane two wire rope of slinging, the slowly rotary crane arm of manhole of slowly slinging, until to the top, foundation ditch position of laying manhole, after precast inspection well is in above foundation ditch, slowly descend, with cable wind rope adjusting precast inspection well position, after the vertical crossed lines of determining base plate is completed with the vertical crossed lines of bed course is corresponding, fall to bed course.
The integral prefabricated construction method for hanging of a kind of steel concrete manhole is characterized in that: little section reinforcing bar is apart from base plate template 0～5cm, and middle vacancy is tamped with wooden unit.
The integral prefabricated construction method for hanging of a kind of steel concrete manhole; it is characterized in that: the cleaning that will eliminate rust before use of interior outer steel mould; the minimum member of internal mold is semicircle; the minimum member of external mold is 1/4th circles; be screwed between member and member, with separator, protective layer thickness undesirable place paved after the internal mold installation.
The integral prefabricated construction method for hanging of a kind of steel concrete manhole is characterized in that: when the well body concrete was built, well head can be used than the round wood plate of steel internal mold slightly larger in diameter and cover, and built top concrete to be carried out press polish after completing and process.
The integral prefabricated construction method for hanging of a kind of steel concrete manhole is characterized in that: during lifting, after circular precast inspection well was transported to the job site, crane was parked in apart from trough rim and is not less than on the position of 3m, and steel hoop and borehole wall spacing are 1cm-2cm.
The invention has the beneficial effects as follows: utilize sufficient working space guaranteed reinforcing bar in process of binding spacing and the protective layer thickness between reinforcing bar and template; Reserving hole adopts steel mould, has guaranteed the smoother indeformable of hole; " two ten methods " hoisting technology coincidence by crossing on base plate and bed course, guarantee steel concrete manhole installation site accurately, and install fast; By prefabricated reinforced concrete inspection well, effectively raise efficiency of construction, saved the engineering time, reduced cost, obtain Construction unit's abundant affirmation, economic benefit and social benefit are remarkable, and very high promotional value is arranged.
(4) description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
When being manhole lifting of the present invention, prepares by accompanying drawing 1 the effect schematic diagram;
Accompanying drawing 2 hangs schematic diagram under manhole of the present invention;
In figure, 1 manhole, 2 base plate graduation marks, 3 reinforcing bar annulus, 4 suspension ring, 5 cable wind ropes, 6 base plates, 7 bed courses, 8 bed course graduation marks.
(5) specific embodiment
Accompanying drawing is a kind of specific embodiment of the present invention.The implementation procedure of this invention is:
1, preparation of construction
1) check the machine operations such as shock club, electric welding machine, crane, loader, electric derusting brush;
2) construction team is carried out that construction technology is told somebody what one's real intentions are and safety is told somebody what one's real intentions are, the line correlation training of going forward side by side;
3) can the quality of check release agent, reinforcing bar conform to quality requirements, internally the receiving inspection such as degree of agreement between the outer steel mould plate;
4) determine reinforcing bar binding and concreting control point and the foundation of inspecting for acceptance.
2, the base plate template is installed and is reinforced
The base plate template machines rear brush release agent, steadily is placed on the sclerosis of plastic sheeting on the ground.Insert little section reinforcing bar on base plate mould four right-angle sides, apart from base plate template 0-5cm, middle vacancy is tamped with wooden unit.If needed, little section steel reinforcing base plate template also can be inserted in side, centre position, every limit.
3, base plate steel bar binding, build and maintenance
Control its rebar spacing and protective layer thickness during the colligation base plate, lower floor's reinforcing bar paves with separator, erects with stirrup between the baseplate reinforcing bar levels.In casting process, vibrating spear in time vibrates, and will fully vibrate to the inboard property at parts of edges and corners of template, prevents cellular.Build and use the plastic sheeting covering curing after completing.To carrying out dabbing between the inner and outer ring reinforcing bar, to reject the surface solidification laitance during dabbing, expose stone, dabbing is wanted thoroughly.
4, well bore reinforcing bar binding
According to the base plate reserving rib, fix the perpendicular muscle of well bore reinforcing bar, first the perpendicular muscle of fixing interior ring well body, be fixed on perpendicular muscle on the base plate reserved steel bar, after a circle colligation is completed, is inserted in the ring muscle from well head, and the control loop muscle is distance between the upper and lower.First ring muscle is from close base plate colligation.After the perpendicular muscle of interior ring and the colligation of ring muscle are completed, get final product colligation outer shroud reinforcing bar, step is the same with interior ring.
5, interior external mold is installed
The cleaning that will eliminate rust before use of interior outer steel mould guarantees the smooth of surface.The rust cleaning electric derusting brush, convenient, thoroughly.The complete rear release agent that in time evenly brushes that eliminates rust is to guarantee the installation of punching block of lower step.Mould is rigid material, and is heavy.The minimum member of internal mold is semicircle, and the minimum member of external mold is 1/4th circles.Be screwed between member and member, and piece is tight, must not have dislocation phenomenon, guarantees that seam crossing is smooth, Shunping County.First internal mold is sling to the reinforcing bar top, apart from 10cm above pithead position, artificial assistance, slow decreasing is put into internal mold in the reinforcing cage ring, and is middle if any encountering reinforcing bar to ravelled spot, needs colligation again to reinforce.With separator, protective layer thickness undesirable place is paved after the internal mold installation.Before external mold is installed, the separator colligation on the outer shroud reinforcing bar.At first external mold becomes two semicircular body to template assembly when installing, and first half is leaned against on the reinforcing cage outer shroud, then by second half steel form, then manually adjusts, and reinforces with screw at two semicircular body edge joint positions.
6, the manhole body is built
When concreting, well head can use the round wood plate than steel internal mold slightly larger in diameter to cover, and forbids falling into the well inner concrete.Highly according to the well chamber determine to build and vibrate pass.Vibrating spear fully vibrates, and must not have to leak the phenomenon of shaking.When building, other station one people around checking in well week, has the place of spillage to reinforce at any time.Build and top concrete is carried out press polish after completing and process.
7, form removal and finished product protection
During the demoulding, take machinery as main, be manually auxiliary, first in after outside.Before taking off internal mold, fixing screw is all backed out, tangled internal mold with crane, slowly sling, need the artificial internal mold of adjusting when slinging, prevent that steel form from causing finished product to damage.When taking off external mold, between semicircle, screw twists off connecting, and first takes off half, then takes off second half.To in time sprinkle water after the demoulding is completed, and with plastic sheeting, well bore be wound up, carry out maintenance.
8, inspect for acceptance
Manhole has free from flaw with it, and project management department carries out self check.Thick to the manhole borehole wall, the preformed hole dimensional gaughing.
9, foundation ditch is processed
The foundation ditch bottom is with processing from mixing the C15 concrete, and thickness is 5cm.The surface flattens and roughening treatment.Then bed course setting-out " ten " word is connected the opposite side central spot, is used for the accurate installation of manhole, carries out at last maintenance.
10, " two ten methods " lifting
Circular precast inspection well is transported to the job site, and crane is parked in apart from trough rim and is not less than on the position of 3m; One steel hoop is enclosed within on circular inspection well well body, and steel hoop and borehole wall spacing are 1cm-2cm, and symmetric system enters two cable wind ropes on steel hoop, are used for regulating the error of circular inspection well when laying.Center on four limits of circular precast inspection well base plate, direction draws respectively vertical line for pointing to the direction in the center of circle, and drawn on base plate " ten " word for corresponding with drawn " ten " word on bed course, accurately lays manhole.Be about the 5m wire rope with two, wirerope diameter is 5cm, two ends are equipped with the U-shaped button, U-shapeds deduction of points in two ends is not buckled on the suspension ring of precast inspection well, crane two wire rope of slinging, and the manhole of slowly slinging is apart from ground 1.5m, rotary crane arm slowly, until to the top, foundation ditch position of laying manhole, in the arm of crane turning course, forbid that personnel walk and work below precast inspection well.Precast inspection well slowly descends after being in above foundation ditch, and crane coordinates artificial, with cable wind rope adjusting precast inspection well position, apart from bed course 20cm place, presses position construction shown in figure F, and namely on base plate and bed course, drawn " ten " word coincides.After definite correspondence is completed, fall to bed course, setting-out on bed course and the setting-out on manhole are coincided get final product.
Adopt the integral prefabricated construction method for hanging of steel concrete manhole of the present invention, the Specific construction step is as follows: preparation of construction → base plate template is installed and reinforcings → base plate steel bar binding → underplate concrete is built → the interior outer steel mould of colligation well bore reinforcing bar → installation → build well body concrete → demoulding → maintenance → inspect for acceptance → lift.
Adopt the integral prefabricated construction method for hanging of steel concrete manhole of the present invention, technical requirements is: adjacent two plate surface difference of height≤2mm; Placement layer by layer thickness≤35cm; The spacing of vibrating 30cm; Maintenance date 〉=14d; The preformed hole molded surface is smoother smooth; The finished surface free from flaw, without the minute bubbles hole, impression quality is good.
Adopt the integral prefabricated construction method for hanging of steel concrete manhole of the present invention, should be in urban road adopt in the steel concrete manhole of various pipelines.
Adopt the integral prefabricated construction method for hanging of steel concrete manhole of the present invention, settle section town road the second stage of the project, epitaxial region, Jinan City Beijing West Railway Station section Municipal Road Engineering, Jinan City's two ring West Road ground level roads and environmental construction engineering to use in the Jinan City along the river, through designing unit, supervisor's onsite acceptance, steel concrete manhole surface flawless, smoother attractive in appearance, the entity quality reaches standard-required; Lifting is success once.Wide application space is arranged in municipal pipeline engineering, promotional value is arranged.
Claims (5)
1. integral prefabricated construction method for hanging of steel concrete manhole is characterized in that: comprise the following steps:
(1), the base plate template is installed and reinforcing: the base plate template machines rear brush release agent, steadily is placed on the sclerosis of plastic sheeting on the ground, inserts little section reinforcing bar on base plate mould four right-angle sides;
(2), base plate steel bar binding, build and maintenance: during the colligation base plate, lower floor's reinforcing bar paves with separator, erect with stirrup between the baseplate reinforcing bar levels, in casting process, vibrating spear in time vibrates, to fully vibrate to the inboard property at parts of edges and corners of template, build and use the plastic sheeting covering curing after completing, to carrying out dabbing between the inner and outer ring reinforcing bar;
(3), well bore reinforcing bar binding: according to the base plate reserving rib, fix the perpendicular muscle of well bore reinforcing bar, first fixing interior ring well body erects muscle, perpendicular muscle is fixed on the base plate reserved steel bar, after a circle colligation is completed, is inserted in the ring muscle from well head, first ring muscle is from close base plate colligation, after the perpendicular muscle of interior ring and the colligation of ring muscle are completed, colligation outer shroud reinforcing bar, step is identical with interior ring;
(4), interior outer steel mould is installed: first internal mold is sling to the reinforcing bar top, slow decreasing, internal mold is put in the reinforcing cage ring, before external mold was installed, on the outer shroud reinforcing bar, at first external mold became two semicircular body to template assembly when installing the separator colligation, first half is leaned against on the reinforcing cage outer shroud, by second half steel form, then manually adjust again, reinforce with screw at two semicircular body edge joint positions;
(5), the manhole body builds: during concreting, highly according to the well chamber determine to build and vibrate pass, vibrating spear will fully vibrate;
(6), form removal and finished product protection: before taking off internal mold, fixing screw is all backed out, tangle internal mold with crane, slowly sling, when taking off external mold, between semicircle, screw twists off connecting, and first takes off half, take off again second half, timely watering after the demoulding is completed, and with plastic sheeting, well bore is wound up, carry out maintenance;
(7), inspect for acceptance: manhole has free from flaw with it, and is thick to the manhole borehole wall, the preformed hole dimensional gaughing;
(8), lifting a: steel hoop is enclosed within on circular inspection well well body, symmetric system enters two cable wind ropes on steel hoop, center on four limits of circular precast inspection well base plate, direction is for pointing to the direction in the center of circle, draw respectively vertical line in order to corresponding with drawn vertical crossed lines on bed course, with two wire rope, two ends are equipped with the U-shaped button, two ends U-shaped deduction of points is not buckled on the suspension ring of precast inspection well, crane two wire rope of slinging, the slowly rotary crane arm of manhole of slowly slinging, until to the top, foundation ditch position of laying manhole, after precast inspection well is in above foundation ditch, slowly descend, with cable wind rope adjusting precast inspection well position, after the vertical crossed lines of determining base plate is completed with the vertical crossed lines of bed course is corresponding, fall to bed course.
2. the integral prefabricated construction method for hanging of steel concrete manhole according to claim 1, it is characterized in that: little section reinforcing bar is apart from base plate template 0～5cm, and middle vacancy is tamped with wooden unit.
3. the integral prefabricated construction method for hanging of steel concrete manhole according to claim 1; it is characterized in that: the cleaning that will eliminate rust before use of interior outer steel mould; the minimum member of internal mold is semicircle; the minimum member of external mold is 1/4th circles; be screwed between member and member, with separator, protective layer thickness undesirable place paved after the internal mold installation.
4. the integral prefabricated construction method for hanging of steel concrete manhole according to claim 1 is characterized in that: when the well body concrete was built, well head can use the round wood plate than steel internal mold slightly larger in diameter to cover, and built top concrete to be carried out press polish after completing and process.
5. the integral prefabricated construction method for hanging of steel concrete manhole according to claim 1, it is characterized in that: during lifting, after circular precast inspection well was transported to the job site, crane was parked in apart from trough rim and is not less than on the position of 3m, and steel hoop and borehole wall spacing are 1cm-2cm.
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| CN103358393A (en) * | 2013-06-17 | 2013-10-23 | 日照市东兴城市配套设备有限公司 | Mold and fabrication technology for producing reinforced concrete inspection well |
| CN104669424A (en) * | 2013-12-03 | 2015-06-03 | 任丘市永基建筑安装工程有限公司 | Concrete steam-curing crack control technique |
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| CN106320498A (en) * | 2015-06-26 | 2017-01-11 | 辽宁有色基础工程公司 | Concrete construction method of round drainage pipeline of tailings pond |
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| CN103358393B (en) * | 2013-06-17 | 2016-08-17 | 日照市东兴城市配套设备有限公司 | A kind of mould producing reinforced concrete inspection and the preparation technology of production reinforced concrete inspection thereof |
| CN103358393A (en) * | 2013-06-17 | 2013-10-23 | 日照市东兴城市配套设备有限公司 | Mold and fabrication technology for producing reinforced concrete inspection well |
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| CN106320498A (en) * | 2015-06-26 | 2017-01-11 | 辽宁有色基础工程公司 | Concrete construction method of round drainage pipeline of tailings pond |
| CN105201065A (en) * | 2015-08-28 | 2015-12-30 | 济南城建集团有限公司 | Construction method of fire board paved with rail cutting joints |
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| CN109137986B (en) * | 2018-08-09 | 2020-10-30 | 杭州江润科技有限公司 | Green lifting and reinforcing construction method for manhole ring of urban road inspection well |
| CN109653252A (en) * | 2019-01-08 | 2019-04-19 | 湖南省第五工程有限公司 | A kind of cast-in-place well room steel form of circle and construction method |
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| CN114046171B (en) * | 2021-11-10 | 2022-08-05 | 中煤第一建设有限公司 | High-strength integrally-cast tunnel ventilation shaft and construction method |
| CN114856995A (en) * | 2022-05-26 | 2022-08-05 | 中交一公局集团水利工程有限公司 | Installation and construction method for pump house coupling pipe |
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