CN106049288B - A kind of cast-in-place annular is encorbelmented pier stud gradation pouring construction method - Google Patents

A kind of cast-in-place annular is encorbelmented pier stud gradation pouring construction method Download PDF

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Publication number
CN106049288B
CN106049288B CN201610495086.9A CN201610495086A CN106049288B CN 106049288 B CN106049288 B CN 106049288B CN 201610495086 A CN201610495086 A CN 201610495086A CN 106049288 B CN106049288 B CN 106049288B
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pier stud
concrete
construction
encorbelmented
pouring
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CN106049288A (en
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张立德
黄毅
朱炯意
梁永祥
郭飞
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Guangzhou City No2 Municipal Engineering Co Ltd
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Guangzhou City No2 Municipal Engineering Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/02Piers; Abutments ; Protecting same against drifting ice

Abstract

The present invention relates to the technical field of construction of cast-in-situ steel reinforced concrete abnormity structures in Urban Bridge, bridge on highway, more particularly to a kind of cast-in-place annular is encorbelmented pier stud gradation pouring construction method, mainly including surveying and locating, the fabrication and installation of pier stud embedded bar, cushion cap pour, pier stud make strutting system is set up, upper reinforcement installation, template construct installation, local support top frame system are set up, pier stud concreting, health and form removal.The present invention greatly improves pier stud finished product overall appearance quality and geometric accuracy, while has ensured construction safety, has saved construction cost.

Description

A kind of cast-in-place annular is encorbelmented pier stud gradation pouring construction method
Technical field
The present invention relates to the construction technology neck of cast-in-situ steel reinforced concrete abnormity structures in Urban Bridge, bridge on highway Domain, more particularly to a kind of cast-in-place annular are encorbelmented pier stud gradation pouring construction method.
Background technology
With deepening continuously for Modernized City Construction, special-shaped pier stud relies on its structure grace, strong adaptability, compared with concrete Solid pier stud saves material and is designed so that use extensively, particularly in landscape bridge.Because its moulding is complicated so that from steel Muscle installation, formwork erection, to final concreting in difficulty of construction than conventional pier stud difficulty increase.Original among these Special-shaped pier stud outer dip angle is big, operating space is small in mould, steel bar stress spacing is closeer because mainly including, and concrete vibration stick can not Directly go deep into bottom from top to vibrate.The construction method of conventional pier stud is that reinforcing bar takes the lead in colligation, is treated after the completion of reinforcing bar colligation once Property completes model sheetinstallat, finally carries out concreting.So the construction method of primary concreting is held very much for special-shaped pier stud It is not in place to easily cause model sheetinstallat, concreting is vibrated not in place, and the later stage causes the presentation qualities such as faulting of slab ends, honeycomb, pitted skin to lack Fall into.Simultaneously when model sheetinstallat is not in place to be adjusted, construction period is extended.
The content of the invention
In view of the deficienciess of the prior art, it is an object of the invention to provide a kind of safe and reliable, practical, construction The cast-in-place annular that speed is fast, Mass accuracy is high is encorbelmented pier stud gradation pouring construction method.
To achieve the above object, the present invention can be achieved by the following technical programs:
A kind of cast-in-place annular is encorbelmented pier stud gradation pouring construction method, is comprised the following steps:
(1) surveying and locating:Before cushion cap roof steel bar installs concreting, unwrapping wire is measured to top pier stud, The vertically and horizontally axis of pier stud is released using measuring instrument, so that it is determined that pier stud bottom outer edge;
(2) pier stud embedded bar fabrication and installation:Site operation personnel carry out reinforcement fabrication according to construction reinforced bar drawing, so Afterwards according to the unwrapping wire data of measurement teams and groups, encorbelmented pier stud embedded bar position, and added interim using interim reinforcing bar stationary annular Support, ensure reinforcing bar not flexural deformation;
(3) cushion cap pours:Cushion cap is carried out after the completion of pier stud reinforcing bar is pre-buried to pour, and treats that cushion cap pours completion, concrete reaches After design strength, dabbing is carried out to pier stud root (cushion cap at the top of) concrete, cuts the laitance on surface, and clear up scum silica frost and broken Bits;
(4) pier stud makes strutting system and set up:After cushion cap pours completion, form removal, start to set up support to aid in Annular is encorbelmented pier stud reinforcement installation, model sheetinstallat and concreting process;
(5) upper reinforcement is installed:Before upper reinforcement installation, by computer graphics software, reinforcement installation mistake is plotted in The auxiliary magnet used is needed in journey, these points include the key point for being used for reinforcing bar positioning, checking, while plan reinforcement installation in advance Sequentially;At the scene in installation process, positioned, checked with plummet and tape measure;
(6) template construct is installed:During template construct, first with construction drawing, 3D models are established by three-dimensional graphics software Encorbelmented pier stud to simulate annular, understand the difficult point that Pier Formwork makes in advance;After template construct is good, piecemeal volume is carried out to it Number;Before installation, model sheetinstallat teams and groups are told somebody what one's real intentions are by three-dimensional software, while the pass of model sheetinstallat is determined in electronic drawing Key point;At the scene during model sheetinstallat, positioned using plummet, tape measure;Template bottom and cushion cap surface contact position, with flitch or Other soft matters fill and lead up embedding reality with after-pouring pier stud concrete;Entered between different steel forms using high-tensile strength Screw arbor with nut at both-ends, high-tensile strength nut Row connection;After model sheetinstallat terminates, to its repetition measurement, plan-position, elevation and perpendicularity meet to carry out after requiring measurement group Construct in next step;
(7) local support top frame system is set up:Encorbelmented larger position for annular pier stud of encorbelmenting, need to be to the branch of support shuttering Upper frame carries out local strengthening;Before setting up shore frame, related load caused by following casting concrete need to be calculated, determines that scaffold is taken If scheme;After scheme meets code requirement, local shore frame reinforcement is carried out;
(8) pier stud concreting:In terms of raw material selection, meet the high-quality of specification and design requirement from match ratio Commercial Concrete;It is larger for annular degree of encorbelmenting, can not the pier stud of primary concreting shaping pour by several times, construction joint should stay in Shearing is smaller and is easy to the position of construction;Position is determined in advance before pouring, and in concreting, vibrator is as a plug Mode supplemented by main, attached vibrator is vibrated, and pier stud concrete using pumping method enters mould, it is necessary to when multilayer pours, therebetween Have a rest the time it is most long must not exceed the concrete presetting period, the slump of concrete is controlled in the range of code requirement;Concrete vibrator is using high Frequency minor diameter poker vibrator, fast insert is pulled out slowly when vibrating, and poker vibrator extend into lower floor 5-10cm when pouring upper strata, should Prevent the vibrated device of template from influenceing and deform or collision slab, reinforcing bar, built-in fitting, it is found that reinforcing bar is trampled or support member moves During position, amendment, forbids operating personnel arbitrarily to be walked about on reinforcing bar in time;Consider to consider in local angle mutation larger part simultaneously Perforate on steel form, poker vibrator is used after perforate, ensure quality of vibrating, completion is carried out after the completion of pouring;Vibrating time With bottom bubble, largely discharge is advisable, and forbids super shake or leakage;
(9) health:Concrete placings complete receive slurry after should sprinkle water as early as possible conserve and use geotextiles or covered rearing with plastic film, holding The wetting state of concrete continuous surface;The concrete water seasoning time is no less than 7 days, and sets special messenger and be responsible for;
(10) form removal:For that without opening position of encorbelmenting, can be removed when concrete compressive strength reaches 2.5Mpa;It is larger for having Encorbelment opening position, should can just be removed after concrete strength reaches 100% design strength;After form removable, concrete surface Defect should be repaired in time, ensure presentation quality.
Further, pay attention to protecting pre-buried pier stud reinforcing bar in step (3), during dabbing.
Further, in step (4), support sets up scope according to the size of pier stud plane both direction to determine, two The outer 0.5m-3m of the maximum span in individual direction scope sets up " returning " font support.
Further, in step (8), every group of pier stud concrete material is selected with the sand material in the place of production and the cement of same specification.
Further, in step (8), at gradation casting position, after the completion of pouring every time, timely dabbing, cleaning laitance, Debris, ensure that pouring new-old concrete next time effectively bonds;Before next time pours, new-old concrete seam crossing is cleared up again, is protected Demonstrate,prove two-step pouring effectively to bond, formed overall.
The present invention is further deepened to construction drawing, determines the check point of reinforcement installation, ensures that reinforcement installation is accurate, profit Annular is established with three-dimensional software to encorbelment pier stud 3D models, makes high-precision fixed steel form, purlin system, template are used outside template Between be attached for high-tensile strength screw rod, piece is close, and it is firm to reinforce, and pier shaft is without tie rod hole, for larger opening position of encorbelmenting, in advance Support checking computations are carried out, ensure the safety of later stage concreting;Gradation casting position is determined before concreting, is poured in concrete When building as a plug based on vibrator, the mode supplemented by attached vibrator is vibrated, and abrupt local position is carried out to template Perforate is vibrated.After pouring by several times, timely dabbing, cleaning, to pour and being ready next time, and meanwhile it is clear again before being poured in next time Reason, ensure that new-old concrete effectively bonds, formed overall.This series of measures will greatly improve pier stud finished product overall appearance quality With geometric accuracy, while construction safety is ensured, saved construction cost.
Brief description of the drawings
Fig. 1 is construction process figure of the present invention;
Fig. 2 is that reinforcing bar 1a ' key points of the present invention confirm figure;
Fig. 3 is the reinforcing bar 1c ' locations drawing of the present invention;
The annular that Fig. 4 is the present invention is encorbelmented pier stud 3D illustratons of model;
Fig. 5 is template piecemeal schematic diagram of the present invention;
Fig. 6 is the local support top frame system schematic diagram of the present invention;
Fig. 7 is that concrete of the present invention pours schematic diagram by several times;
In figure:1- pier studs, 2- shore frames, 3- side templates, 1a '-reinforcing bar, 1c '-reinforcing bar.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is further illustrated:
Such as Fig. 1, cast-in-place annular of the present invention is encorbelmented pier stud gradation pouring construction method, is comprised the following steps:
(1) surveying and locating
Before cushion cap roof steel bar installs concrete construction, measurement teams and groups measure unwrapping wire to pier stud outline, join According to cap design of pile size:Long 1750cm, wide 750cm, high 200cm, the vertically and horizontally axis of pier stud is released using measuring instrument, so as to Pier stud bottom outer edge is determined, the pre-buried position and template assembly position of pier stud reinforcing bar, is later stage reinforcement installation and model sheetinstallat It is ready.
(2) pier stud embedded bar fabrication and installation
Site operation personnel carry out reinforcement fabrication according to construction reinforced bar drawing, and using measurement group unwrapping wire as foundation, installation is pre- The embedded bar made, using interim reinforcing bar anchor block post embedded bar position, prepared for top pier stud reinforcement installation.With hanging Machine is disposably lifted into pours place position by several times, and adds temporary support, ensures reinforcing bar not flexural deformation.
(3) cushion cap pours
Cushion cap is carried out after the completion of pier stud reinforcing bar is pre-buried to pour, and treats that cushion cap pours completion, it is right after concrete reaches design strength Pier stud root (cushion cap at the top of) concrete carries out dabbing, cuts the laitance on surface, and clears up scum silica frost and chip, pays attention to during dabbing pair Pre-buried pier stud reinforcing bar is protected.
(4) pier stud makes strutting system and set up
After cushion cap pours completion, form removal, start to set up support and encorbelmented pier stud reinforcement installation, template with means of complementary annular Installation and concreting process.Support sets up scope according to the size of pier stud plane both direction to determine, in both direction The outer 0.5m-3m of maximum span scope set up " going back to " font support, middle part reserved steel bar and model sheetinstallat position.So set up The advantages of support is further adjust support the later stage, and reinforcement installation, Site Welding and model sheetinstallat can be existing Voluntarily increase and decrease on bracket basis, flexibly and easily.Assuming that X-direction pier stud the widest part reaches 1625cm, Y-direction width is most a width of 300cm, support are 1800cm in X-direction length, and Y-direction length is 450cm, then it is 175cm that X-direction, which sets up length, and Y-direction is taken If width is 150cm.
(5) upper reinforcement is installed
Before upper reinforcement installation, by computer graphics software, be plotted in during reinforcement installation need to use it is auxiliary Help a little, these points include the key point for being used for reinforcing bar positioning, checking, such as reinforcing bar 1a ' in Fig. 2, in order to ensure reinforcement installation standard The distance between really, key point A, B ... H, G are determined on computers in advance, and determine, so when making reinforcing bar 1a ', just more It is easily guaranteed that the accurate of size.Plan reinforcement installation order, such as reinforcing bar 1c ' in Fig. 3 in advance simultaneously, it is possible in side template 3 In-site installation is carried out after installing again, is thus easier to ensure that and is installed in place, size and drawing deviation are small.Installation process at the scene In, with plummet, tape measure positioning, check.
(6) template construct is installed
During template construct, first with construction drawing, 3D models are established to simulate special-shaped pier stud, such as by three-dimensional graphics software Shown in Fig. 4.The difficult point that Pier Formwork makes is understood in advance.After template construct is good, piecemeal numbering is carried out, as shown in Figure 5.Installation Before, model sheetinstallat teams and groups are told somebody what one's real intentions are by three-dimensional software, it is vivider, it is easier to understand.Determined simultaneously in electronic drawing The key point of model sheetinstallat.At the scene during model sheetinstallat, positioned using plummet, tape measure.Template bottom connects with cushion cap surface Synapsis, embedding reality is filled and led up with after-pouring pier stud concrete with flitch or other soft matters.Between different steel forms using high-tensile strength Screw arbor with nut at both-ends, High-tensile strength nut is attached.After model sheetinstallat terminates, for measurement group to its repetition measurement, plan-position, elevation and perpendicularity meet will Next step construction can be carried out after asking.
For annular inboard template C1-C3, No. C8, as shown in fig. 7, need to be installed after the completion of pouring for the first time, during installation Locked with adjacent forms by high-tensile strength screw rod mutually.And for top template C4-C7, then need to set up strutting system in advance, The installation form again after strutting system is set up.
(7) local support top frame system is set up
Encorbelmented larger position for annular pier stud of encorbelmenting, local strengthening, such as Fig. 6 need to be carried out to the shore frame of support shuttering It is shown;Before setting up shore frame, related load caused by following casting concrete need to be calculated, determines shore frame erection scheme;Scheme After meeting code requirement, local shore frame reinforcement is carried out.
(8) pier stud concreting
In terms of raw material selection, the best buy concrete of specification and design requirement is met from match ratio.It is outstanding for annular Choose that degree is larger, can not the pier stud of primary concreting shaping pour by several times, as shown in fig. 6, construction joint should stay in shearing compared with Position that is small and being easy to construction;Position is determined in advance before pouring, in concreting, as a plug based on vibrator, attachment Mode supplemented by formula vibrator is vibrated, and pier stud concrete enters mould using pumping method, and every group of pier stud concrete material is selected with the place of production The cement of sand material and same specification;When needing the multilayer to pour, its intermittent time is most long to must not exceed concrete presetting period, the slump of concrete Degree control is in the range of code requirement;Because pier stud reinforcing bar density is larger, tumbling barrel, string pipe can not be used, therefore concrete vibrator is adopted With high frequency minor diameter poker vibrator, fast insert is pulled out slowly when vibrating, and poker vibrator extend into lower floor 5- when pouring upper strata 10cm, should prevent the vibrated device of template from influenceing and deform or collision slab, reinforcing bar, built-in fitting, find reinforcing bar trampled or When support member shifts, amendment, forbids operating personnel arbitrarily to be walked about on reinforcing bar in time;Consider simultaneously larger in local angle mutation Place considers the perforate on steel form, as shown in fig. 7, using poker vibrator after perforate, ensures quality of vibrating, after the completion of pouring Carry out completion;With bottom bubble, largely discharge is advisable vibrating time, forbids super shake or leakage.
At gradation casting position, after the completion of pouring every time, timely dabbing, cleaning laitance, debris, ensure to pour next time newly Old concrete effectively bonds;Before next time pours, new-old concrete seam crossing is cleared up again, ensures that two-step pouring effectively bonds, Formed overall.
(9) health:Concrete placings complete receive slurry after should sprinkle water as early as possible conserve and use geotextiles or covered rearing with plastic film, holding The wetting state of concrete continuous surface;The concrete water seasoning time is no less than 7 days, and sets special messenger and be responsible for.
(10) form removal:For that without opening position of encorbelmenting, can be removed when concrete compressive strength reaches 2.5Mpa;It is larger for having Encorbelment opening position, should can just be removed after concrete strength reaches 100% design strength;After form removable, concrete surface Defect should be repaired in time, ensure presentation quality.
For those skilled in the art, it is various corresponding can be made according to above technical scheme and design for other Change and deformation, and all these change and deformation should all belong within the protection domain of the claims in the present invention.

Claims (5)

  1. The pier stud gradation pouring construction method 1. a kind of cast-in-place annular is encorbelmented, it is characterised in that comprise the following steps:
    (1) surveying and locating:Before cushion cap roof steel bar installs concreting, unwrapping wire is measured to top pier stud, utilized Measuring instrument releases the vertically and horizontally axis of pier stud, so that it is determined that pier stud bottom outer edge;
    (2) pier stud embedded bar fabrication and installation:Site operation personnel carry out reinforcement fabrication, Ran Hougen according to construction reinforced bar drawing According to the unwrapping wire data of measurement teams and groups, encorbelmented pier stud embedded bar position using interim reinforcing bar stationary annular, and add temporary support, Ensure reinforcing bar not flexural deformation;
    (3) cushion cap pours:Cushion cap is carried out after the completion of pier stud reinforcing bar is pre-buried to pour, and treats that cushion cap pours completion, concrete reaches design After intensity, dabbing is carried out to pier stud root concrete, cuts the laitance on surface, and clear up scum silica frost and chip;
    (4) pier stud makes strutting system and set up:After cushion cap pours completion, form removal, start to set up support with means of complementary annular Encorbelment pier stud reinforcement installation, model sheetinstallat and concreting process;
    (5) upper reinforcement is installed:Before upper reinforcement installation, by computer graphics software, it is plotted in during reinforcement installation The auxiliary magnet used is needed, these points include the key point for being used for reinforcing bar positioning, checking, while plan that reinforcement installation is suitable in advance Sequence;At the scene in installation process, positioned, checked with plummet and tape measure;
    (6) template construct is installed:During template construct, first with construction drawing, 3D models are established come mould by three-dimensional graphics software Near-ring shape is encorbelmented pier stud, understands the difficult point that Pier Formwork makes in advance;After template construct is good, piecemeal numbering is carried out to it;Peace Before dress, model sheetinstallat teams and groups are told somebody what one's real intentions are by three-dimensional software, while the key point of model sheetinstallat is determined in electronic drawing; At the scene during model sheetinstallat, positioned using plummet, tape measure;Template bottom and cushion cap surface contact position, with flitch or other Soft matter fills and leads up embedding reality with after-pouring pier stud concrete;Connected between different steel forms using high-tensile strength Screw arbor with nut at both-ends, high-tensile strength nut Connect;After model sheetinstallat terminates, measurement group can carry out next to its repetition measurement, plan-position, elevation and perpendicularity satisfaction after requiring Step construction;
    (7) local support top frame system is set up:Encorbelmented larger position for annular pier stud of encorbelmenting, need to be to the shore frame of support shuttering Carry out local strengthening;Before setting up shore frame, related load caused by following casting concrete need to be calculated, determines scaffold building side Case;After scheme meets code requirement, local shore frame reinforcement is carried out;
    (8) pier stud concreting:In terms of raw material selection, the best buy of specification and design requirement is met from match ratio Concrete;It is larger for annular degree of encorbelmenting, can not the pier stud of primary concreting shaping pour by several times, construction joint should stay in shearing Position that is smaller and being easy to construction;Position is determined in advance before pouring, in concreting, as a plug based on vibrator, attached The mode supplemented by formula vibrator to be vibrated, pier stud concrete using pumping method enters mould, it is necessary to when multilayer pours, its intermittent time Most long to must not exceed the concrete presetting period, the slump of concrete is controlled in the range of code requirement;Concrete vibrator is small straight using high frequency Footpath poker vibrator, fast insert is pulled out slowly when vibrating, and poker vibrator extend into lower floor 5-10cm when pouring upper strata, should prevent mould The vibrated device of plate influences and deformed or collision slab, reinforcing bar, built-in fitting, it is found that when reinforcing bar is trampled or support member shifts, Amendment in time, forbids operating personnel arbitrarily to be walked about on reinforcing bar;Consider to consider in punching block in local angle mutation larger part simultaneously Perforate on plate, poker vibrator is used after perforate, ensure quality of vibrating, completion is carried out after the completion of pouring;Vibrating time is the bottom of with Largely discharge is advisable for portion bubble, forbids super shake or leakage;
    (9) health:Concrete placings complete receive slurry after should sprinkle water as early as possible conserve and use geotextiles or covered rearing with plastic film, holding concrete table The lasting wetting state in face;The concrete water seasoning time is no less than 7 days, and sets special messenger and be responsible for;
    (10) form removal:For that without opening position of encorbelmenting, can be removed when concrete compressive strength reaches 2.5Mpa;For having compared with large cantilever Opening position, it should can just be removed after concrete strength reaches 100% design strength;After form removable, concrete surface defect It should in time be repaired, ensure presentation quality.
  2. The pier stud gradation pouring construction method 2. cast-in-place annular according to claim 1 is encorbelmented, it is characterised in that:Step (3) In, pay attention to protecting pre-buried pier stud reinforcing bar during dabbing.
  3. The pier stud gradation pouring construction method 3. cast-in-place annular according to claim 1 is encorbelmented, it is characterised in that:Step (4) In, support sets up scope according to the size of pier stud plane both direction to determine, the 0.5m-3m outside the maximum span of both direction Scope set up " returning " font support.
  4. The pier stud gradation pouring construction method 4. cast-in-place annular according to claim 1 is encorbelmented, it is characterised in that:Step (8) In, every group of pier stud concrete material is selected with the sand material in the place of production and the cement of same specification.
  5. The pier stud gradation pouring construction method 5. cast-in-place annular according to claim 1 is encorbelmented, it is characterised in that:Step (8) In, at gradation casting position, after the completion of pouring every time, timely dabbing, cleaning laitance, debris, ensure to pour new and old mix next time Solidifying soil effectively bonds;Before next time pours, new-old concrete seam crossing is cleared up again, is ensured that two-step pouring effectively bonds, is formed It is overall.
CN201610495086.9A 2016-06-27 2016-06-27 A kind of cast-in-place annular is encorbelmented pier stud gradation pouring construction method Active CN106049288B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050117733A (en) * 2004-06-11 2005-12-15 정영수 Hollow type composite pier structure using precast concrete form and constructing method therefor
CN103321141A (en) * 2013-07-18 2013-09-25 重庆交通大学 Reinforced concrete cylindrical pier and construction method thereof
CN103437279A (en) * 2013-08-29 2013-12-11 中交二公局第一工程有限公司 Overhead cast-in-place box beam pressure-bearing strut and construction technology thereof
CN203947417U (en) * 2014-03-12 2014-11-19 中交二航局第四工程有限公司 A kind of realization without the cast-in-place supporting structure of cushion cap approach viaduct concrete case beam limited bracket
CN104963295A (en) * 2015-07-27 2015-10-07 中铁九局集团第二工程有限公司 Support frame for non-ground internal-force balanced cast-in-place beam and construction method thereof
CN105178199A (en) * 2015-10-19 2015-12-23 中亿丰建设集团股份有限公司 Pier column construction method and pier column template

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050117733A (en) * 2004-06-11 2005-12-15 정영수 Hollow type composite pier structure using precast concrete form and constructing method therefor
CN103321141A (en) * 2013-07-18 2013-09-25 重庆交通大学 Reinforced concrete cylindrical pier and construction method thereof
CN103437279A (en) * 2013-08-29 2013-12-11 中交二公局第一工程有限公司 Overhead cast-in-place box beam pressure-bearing strut and construction technology thereof
CN203947417U (en) * 2014-03-12 2014-11-19 中交二航局第四工程有限公司 A kind of realization without the cast-in-place supporting structure of cushion cap approach viaduct concrete case beam limited bracket
CN104963295A (en) * 2015-07-27 2015-10-07 中铁九局集团第二工程有限公司 Support frame for non-ground internal-force balanced cast-in-place beam and construction method thereof
CN105178199A (en) * 2015-10-19 2015-12-23 中亿丰建设集团股份有限公司 Pier column construction method and pier column template

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