CN108729466A - A kind of large form method for supporting for constructing no holdfast concrete barricade - Google Patents

A kind of large form method for supporting for constructing no holdfast concrete barricade Download PDF

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Publication number
CN108729466A
CN108729466A CN201810530678.9A CN201810530678A CN108729466A CN 108729466 A CN108729466 A CN 108729466A CN 201810530678 A CN201810530678 A CN 201810530678A CN 108729466 A CN108729466 A CN 108729466A
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China
Prior art keywords
large form
concrete
bank protection
wire drawing
anchor pole
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CN201810530678.9A
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Chinese (zh)
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CN108729466B (en
Inventor
曾从伟
纪桂强
陈辉
陈国民
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China Metallurgical Construction Engineering Group Co Ltd
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China Metallurgical Construction Engineering Group Co Ltd
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Publication of CN108729466A publication Critical patent/CN108729466A/en
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/02Retaining or protecting walls
    • E02D29/0258Retaining or protecting walls characterised by constructional features
    • E02D29/0275Retaining or protecting walls characterised by constructional features cast in situ

Abstract

The invention discloses a kind of large form method for supporting of no holdfast concrete barricade, including following process:It is segmented and is constructed from top to down using contrary sequence method, after the slope surface in every section of construction area excavates molding and completes body bank protection armature boring and slip casting, it is characterised in that:First, two ends of the fixed cantilever in bank protection anchor pole outer end and the rock end that enters of bank protection anchor pole are welded into a whole using tension rib, are formed " tripod structure ";Then, in two tip positions of cantilever arrangement " L " type to wire drawing bar, the pulling eye position that wire drawing bar is used to be correspondingly arranged on large form;And then, large form is installed after the completion of the binding of concrete barricade reinforcing bar, and large form is fastened to wire drawing bar using " L " shape;Finally, the suspension of platform frame and platform frame are installed on large form after large form is installed and fastened, and completely spreads springboard and installation round steel guardrail on platform frame, and uses steel pipe or shaped steel diagonal brace large form to reinforce the stability of large form.

Description

A kind of large form method for supporting for constructing no holdfast concrete barricade
Technical field
The invention belongs to concrete barricade fields, and in particular to a kind of large form method for supporting for constructing no holdfast concrete barricade.
Background technology
Be typically assembled with wooden model or small steel templates for formwork support structure when traditional concrete Retaining wall, and using plus If the holdfast of auxiliary reinforces the form of wire drawing bar as template, to prevent in concreting, mounted split pattern is by concrete Lateral pressure is excessive and generates the accident of sudden and violent mould.This kind of form of construction work, due to template assembly block number is more, the rigidity of itself compared with Small, presentation quality and flatness effect after concrete formation are generally extremely difficult to the requirement of clear-water concrete, need large area Grinding process, and due to adding a large amount of auxiliary holdfasts, it is few that template is used in turn number, considerably increases construction cost.
Based on this, how to design one kind and be easy to match with large form, and auxiliary holdfast need not be preset(Make concrete barricade Appearance piece is less, flatness higher), it is easily designed and construction, can be promoted concrete Retaining wall quality without holdfast concrete barricade. But how using easy to operate, bearing surely is leaned on, the large form method for supporting for constructing no holdfast concrete barricade easy to implement, is need The technical issues of considering to solve.
Invention content
In view of the above shortcomings of the prior art, the technical problem to be solved by the present invention is to:How a kind of operation letter is provided Just, bearing is surely leaned on, the large form method for supporting for constructing no holdfast concrete barricade easy to implement.
In order to solve the above-mentioned technical problem, present invention employs the following technical solutions:
A kind of large form method for supporting of no holdfast concrete barricade, including following process:It is segmented progress from top to down using contrary sequence method Construction, first, after the slope surface in every section of construction area excavates molding and completes the drilling of bank protection anchor pole 1 and slip casting, it is characterised in that: Using tension rib 2, the rock end that enters of two ends of the fixed cantilever in 1 outer end of bank protection anchor pole and bank protection anchor pole 1, to be welded into one whole Body is formed " tripod structure ";Then, wire drawing bar 3 uses wire drawing bar 3 in two tip positions of cantilever arrangement " L " type In the pulling eye position being correspondingly arranged on large form 5;And then, large form is installed after the completion of the binding of concrete barricade reinforcing bar 4 5, and large form 5 is fastened to wire drawing bar 3 using " L " shape;Finally, pacify on large form 5 after large form 5 is installed and fastened If platform frame suspension 11 and platform frame 6, and springboard 7 and installation round steel guardrail 8 are completely spread on platform frame 6, and Use steel pipe or 10 diagonal brace large form 5 of shaped steel to reinforce the stability of large form;After large form is reinforced, to concrete barricade reinforcing bar After 4 casting concretes form concrete barrier wall structure, then carry out the inverse construction for making hypomere region.
It compares compared with construction technology, the advantages of large form method for supporting of the present invention without holdfast concrete barricade is:
1, it rationally utilizes, reduces cost:Take full advantage of itself design bank protection anchor pole anchorage effect and large form advantage and Material property is welded into a whole using steel tie rock bank protection anchor pole cantilever end portion is entered, itself overhanging part is formed " tripod structure " makes its all concrete all be transmitted to bank protection bolt portion to the lateral pressure of large form, takes full advantage of and set The bank protection anchor pole anchor force of itself in meter reduces largely default holdfast, reduces construction cost and shorten operation work Phase.
2, easily designed and construction:It can be used in combination with large form, make full use of large form and have both large form tool Some advantage and characteristics(Construction area bigger, large form recycling, reduces construction cost), using concrete barricade without the big mould of holdfast Board supporting structure can shorten the duration of concrete Retaining wall, it is ensured that the quick formation of the concrete barricade under different geological conditions is realized Concrete formation face reaches the technical quality effect of clear-water concrete.
3, quality controllable, it is easy to operate:Take full advantage of big punching block good integrity, easy to operate feature, it is ensured that mixed Flat appearance, piece one after solidifying earth forming are good to, flatness, reduce the appearance processing of the concrete barricade in later stage;Its large form Reinforce it is simple, easy to assembly, and without setting up scaffold as operating platform.
Description of the drawings
Fig. 1 is the schematic diagram for using the present invention and constructing no holdfast concrete barricade side elevation in construction;
Fig. 2 is the scheme of installation for using the present invention and constructing no holdfast concrete barricade large form in construction;
Fig. 3 be use construct the present invention without holdfast concrete barricade construction when to the scheme of installation at wire drawing bar;
Fig. 4 is the side elevation schematic diagram for the operating platform that the large form method for supporting of the invention for constructing no holdfast concrete barricade is built;
Fig. 5 is the structural schematic diagram of guardrail part in Fig. 4.
In figure label for:
1-bank protection anchor pole, 2-tension ribs, 3-to wire drawing bar, 4-concrete barricade reinforcing bars, 5-large forms, 6-platform framves, 7-platform planks, 8-round steel guardrails, 9-cushion blocks, 10-diagonal braces, the suspension of 11-platform framves.
Specific implementation mode
The present invention is described in further detail below in conjunction with the accompanying drawings.
A kind of no holdfast concrete barricade, including concrete barricade reinforcing bar 4, the concrete barricade reinforcing bar 4 are used to construct the concrete of covering slope surface Barricade further includes bank protection anchor pole 1 and tension rib 2;
The oblique underthrust in described 1 one end of bank protection anchor pole is solid in the rock stratum of slopes, and the other end of the bank protection anchor pole 1 is exposed at outside slopes Portion and running through obliquely and is fixedly linked at the concrete barricade reinforcing bar 4 with the medium position in a jib-length direction, the cantilever It is abutted against with deviating from the outside of slope surface on the concrete barricade reinforcing bar 4;
It is located at entering to be respectively welded between rock end and be fixed in slopes on two ends of the cantilever and the bank protection anchor pole 1 A piece tension rib 2, and so that connection forms " tripod structure " jointly for the cantilever and the tension rib 2.
Wherein, cantilever and tension rib 2 are reinforcing bar.
Wherein, the bank protection anchor pole 1 using can cured slurries slip casting form(It can be inserted into reinforcing bar before slip casting or steel twists Line reinforces the intensity of bank protection anchor pole).The slip casting of architectural engineering is by certain curable slurries(Such as:Cement mortar)Inject rock In the crack of soil base or hole, by modes such as displacement, filling, extruding to improve the method for its physico-mechanical properties.
Include the following steps when above-mentioned no holdfast concrete Retaining wall:
(1)In side slope contrary sequence method(Contrary sequence method is a kind of existing Retaining wall engineering method, is segmentation from top to down(Layer)Operation)From After the molding of lower excavation and completing the drilling of body bank protection anchor pole 1 and slip casting, using tension rib 2 two ends of cantilever and bank protection anchor The rock end that enters of bar 1 is welded into a whole, and is formed " tripod structure ", according to the pulling eye position of large form in cantilever end position Set arrangement " L " type to wire drawing bar 3(It is made by reinforcing bar);Large form 5 is installed after the completion of the binding of concrete barricade reinforcing bar 4, and is used " L " shape fastens large form 5 to wire drawing bar 3, to meet the needs that concreting operates in construction, is installed tightly in large form 5 Platform frame suspension 11 and platform frame 6 are installed after Gu on it, and completely spreads 7 He of springboard on platform frame 6 Round steel guardrail 8 is installed, and uses steel pipe or 10 diagonal brace large form of shaped steel to reinforce the stability of large form, is completed in the above process After large form checks reinforcing, after casting concrete then forms concrete barrier wall structure, then carries out inverse subordinate's process of making and construct.
(2)Corresponding improvement to wire drawing bar 3:Since though the general intensity to wire drawing bar 3 used is high, shear behavior Difference, and replace original to wire drawing bar using " L " steel bar since the assembled area of large form 5 is big, when assembled, and stretch out in large form face It is welded again to wire drawing bar after plate is outer, or is directly welded and fixed reinforcing bar section on reinforcing bar, can effectively avoid security risk.
Large form method for supporting using the present invention solves more barricade appearance piece, poor flatness and need not be arranged The problem of assisting holdfast, can not only shorten the construction period, reduce the side slope exposed time, moreover it is possible to obtain significant mass effect and warp Ji benefit.Technological process of the large form method for supporting construction without holdfast concrete barricade using the present invention is as follows:
Side slope classification excavation → side slope amendment → floor slot is artificially formed → and bank protection armature boring and slip casting → steel tie apply → concrete barricade reinforcing bar binding → " L " shape applies → large form installation → operating platform installation → concreting to wire drawing bar reinforcing bar → large form dismounting → floor slot extends to form → next stage concrete Retaining wall → formation cycle operation(It is inverse to make to bottom).
Large form method for supporting construction using the present invention can shorten the duration of concrete Retaining wall, really without holdfast concrete barricade The quick formation of the concrete barricade under different geological conditions is protected, realizes that concrete formation face reaches the construction quality of clear-water concrete Effect;It saves project cost, can also synchronize and be included in relevant construction technical schemes, and according to meeting different geological conditions concrete The needs of barricade rapid shaping realize the perfect adaptation of Social benefit and economic benefit, make up the deficiency of existing construction method, with And enrich existing side slope supporting construction technical specification.
It the above is only the preferred embodiment of the present invention, it is noted that not departing from this for those skilled in the art Under the premise of technical solution, the technical solution for the several modifications and improvements made should equally be contemplated as falling within the claims requirement The range of protection.

Claims (1)

1. a kind of large form method for supporting of no holdfast concrete barricade, including following process:Be segmented from top to down using contrary sequence method into Row construction excavates molding in the slope surface of every section of construction area and completes body bank protection anchor pole first(1)It is special after drilling and slip casting Sign is:Using tension rib(2)Bank protection anchor pole(1)Two ends of the fixed cantilever in outer end and bank protection anchor pole(1)Enter rock End is welded into a whole, and is formed " tripod structure ";Then, in two tip positions of cantilever arrangement " L " type to wire drawing Bar(3), to wire drawing bar(3)For running through large form(5)On the pulling eye position that is correspondingly arranged;And then, in concrete barricade reinforcing bar (4)Large form is installed after the completion of binding(5), and using " L " shape to wire drawing bar(3)Fasten large form(5);Finally, in big mould Plate(5)In large form after installation fastening(5)On install platform frame suspension(11)And platform frame(6), and flat Platform supporting rack(6)On completely spread springboard(7)With installation round steel guardrail(8), and use steel pipe or shaped steel(10)Diagonal brace large form(5)With Reinforce the stability of large form;After large form is reinforced, to concrete barricade reinforcing bar(4)Casting concrete forms concrete barrier wall structure Afterwards, it then carries out against the construction for making hypomere region.
CN201810530678.9A 2018-05-29 2018-05-29 Large formwork supporting method for constructing anchor-free concrete retaining wall Active CN108729466B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111155533A (en) * 2020-01-16 2020-05-15 徐祥春 Basement reverse construction method unilateral shear wall template reinforcing method
CN112554208A (en) * 2020-11-03 2021-03-26 中铁二局集团有限公司 Cantilever support platform, supporting and retaining wall and construction method

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CN107013033A (en) * 2017-04-26 2017-08-04 中铁十八局集团有限公司 A kind of concrete side wall formwork for placing and its construction method
CN206736864U (en) * 2017-03-21 2017-12-12 中国葛洲坝集团三峡建设工程有限公司 Hydraulic self-lifting cantilever heavy type arch dam shuttering work platform
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CN203129203U (en) * 2013-01-25 2013-08-14 山东义泰建设工程有限公司 Rubble retaining wall reinforcing single-face formwork supporting system
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CN206736864U (en) * 2017-03-21 2017-12-12 中国葛洲坝集团三峡建设工程有限公司 Hydraulic self-lifting cantilever heavy type arch dam shuttering work platform
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CN206844659U (en) * 2017-05-22 2018-01-05 中冶建工集团有限公司 Basement barricade single side formwork system

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111155533A (en) * 2020-01-16 2020-05-15 徐祥春 Basement reverse construction method unilateral shear wall template reinforcing method
CN112554208A (en) * 2020-11-03 2021-03-26 中铁二局集团有限公司 Cantilever support platform, supporting and retaining wall and construction method
CN112554208B (en) * 2020-11-03 2022-02-18 中铁二局集团有限公司 Cantilever support platform, supporting and retaining wall and construction method

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