CN112095560A - Large-inclination-angle trash rack one-step forming suspension type slip form and construction method - Google Patents

Large-inclination-angle trash rack one-step forming suspension type slip form and construction method Download PDF

Info

Publication number
CN112095560A
CN112095560A CN202011023929.8A CN202011023929A CN112095560A CN 112095560 A CN112095560 A CN 112095560A CN 202011023929 A CN202011023929 A CN 202011023929A CN 112095560 A CN112095560 A CN 112095560A
Authority
CN
China
Prior art keywords
concrete
trash rack
suspension
die
sliding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011023929.8A
Other languages
Chinese (zh)
Inventor
任强
王宗敏
陈育权
吴世然
章琦云
徐寒
佘伟威
柯昌佳
王涛
白景昭
史春道
谭文涛
程峰
张冰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Yaocheng Construction Co ltd
Zhengzhou Meiyu Building Engineering Co ltd
Sinohydro Bureau 3 Co Ltd
China International Water and Electric Corp
Original Assignee
Hunan Yaocheng Construction Co ltd
Zhengzhou Meiyu Building Engineering Co ltd
Sinohydro Bureau 3 Co Ltd
China International Water and Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hunan Yaocheng Construction Co ltd, Zhengzhou Meiyu Building Engineering Co ltd, Sinohydro Bureau 3 Co Ltd, China International Water and Electric Corp filed Critical Hunan Yaocheng Construction Co ltd
Priority to CN202011023929.8A priority Critical patent/CN112095560A/en
Publication of CN112095560A publication Critical patent/CN112095560A/en
Pending legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B15/00Cleaning or keeping clear the surface of open water; Apparatus therefor
    • E02B15/04Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
    • E02B15/06Barriers therefor construed for applying processing agents or for collecting pollutants, e.g. absorbent
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D15/00Handling building or like materials for hydraulic engineering or foundations
    • E02D15/02Handling of bulk concrete specially for foundation or hydraulic engineering purposes

Abstract

The invention discloses a large-dip-angle trash rack one-step forming suspension type slip form and a construction method, wherein the large-dip-angle trash rack one-step forming suspension type slip form comprises a die body system and a suspension system; the die body system comprises trash rack-shaped templates spliced by panels, and ribs and support trusses are arranged among the templates; a working platform is laid on the upper surface of the die body system; a hydraulic control system is arranged on the working platform; the suspension system comprises a suspension support frame with a truss structure, and the suspension support frame is fixed on the upper platform of the trash rack through anchor bars and steel supports; a plurality of groups of suspension pull rods are connected below the suspension support frame, and the bottom ends of the suspension pull rods are connected with the truss of the die body system through hydraulic jacks; the suspension angle of the suspension pull rod is consistent with the inclination angle of the trash rack; a concrete conveying system is arranged above the die body system along the installed steel bars and the installed track; a defect eliminating and maintaining system is connected below the die body system; the method has the characteristics of binding and positioning the reinforcing steel bars at one time, completing the installation of the grid groove and the track at one time, canceling the second-stage concrete construction and utilizing the suspension type slip form for one-time forming.

Description

Large-inclination-angle trash rack one-step forming suspension type slip form and construction method
Technical Field
The invention belongs to the field of hydropower station water inlet construction, and particularly relates to a suspension type slip form formed by one-step forming of a large-inclination-angle trash rack and a construction method.
Background
At present, the traditional construction process of the large-inclination-angle trash rack at the water inlet of the hydropower station comprises the following steps: firstly, carrying out first-stage grid pier reinforced concrete construction in a layered mode, simultaneously reserving grid grooves and track embedded parts, then carrying out grid groove and track installation, and finally carrying out second-stage grid groove concrete construction. The traditional construction process has more construction procedures, relatively longer construction period and relatively higher engineering cost. The system analysis mainly has the following outstanding defects and shortcomings:
1. need set up the scaffold, manpower, material resources invest greatly: the scaffold is required to be installed as a working platform in the process of first-stage reinforced concrete lining, grid groove, trash cleaning machine rail installation, second-stage grid groove lining and the like. And the inclined structure is inconvenient to lift, hoisting equipment is required to be matched, the investment of human resources and material resources is more, and the engineering cost is increased.
2. The concrete lining layer-by-layer construction has large construction quality control difficulty: whether reverse formwork or formwork is adopted, the concrete construction process and the engineering quality cannot be controlled very intuitively; whether the first-stage lining of the grid pier or the second-stage lining of the grid groove is adopted, the procedures of uniform warehousing, layered leveling, dense vibration and the like are difficult to operate, the construction joints are more, and the quality is difficult to effectively control. Meanwhile, the lining concrete can be demoulded after being forced, construction defects cannot be found at any time in the construction process, effective treatment cannot be timely achieved, effective maintenance cannot be timely implemented on the concrete, and the quality control difficulty is increased to a certain extent.
3. The construction procedure is complicated, the high-altitude operation is carried out, and the safety risk is large: scaffold is set up and removed on an inclined plane of 60 degrees, measurement paying-off and control are carried out, reinforcing steel bars are installed and reinforced, grid grooves and tracks are installed and corrected, concrete formwork erection and formwork removal are frequently carried out, high-altitude operation is carried out, safety protection and safety protection workload are large, safety management difficulty is large, and safety risks are remarkably increased.
4. The construction process is many, and construction speed is limited, and engineering cost is high: the construction processes of first-stage reinforced concrete construction, pre-buried grid grooves, track embedded parts and installation, second-stage concrete construction, repeated installation and disassembly of templates and the like are frequently alternated, and the construction speed is severely restricted. Meanwhile, the hoisting equipment occupies for a long time, and the construction cost is obviously improved.
In conclusion, the rapid construction device and the method for one-step forming of the large-inclination-angle trash rack, which have the advantages of simple structure, convenience in mounting and dismounting, controllable cost, simple and direct process, safety and reliability, capability of visually monitoring the concrete lining process and capability of timely maintaining and repairing the concrete construction defects, are the problems to be solved urgently by engineering technicians in the field.
Disclosure of Invention
The invention aims to effectively solve the key problems in the construction process of the traditional construction method of the large-inclination-angle trash rack, and provides a one-step forming suspended sliding form of the large-inclination-angle trash rack and a construction method, wherein the suspended sliding form is simple in structure, convenient to install and disassemble, controllable in cost, simple and convenient in process, safe and reliable, capable of monitoring the concrete lining process and timely maintaining and repairing the concrete defects; the method has the characteristics of binding and positioning the reinforcing steel bars at one time, completing the installation of the grid groove and the track at one time, canceling the second-stage concrete construction and utilizing the suspension type slip form for one-time forming.
In order to realize the design, the technical scheme adopted by the invention is as follows: a suspension type slip form for one-step forming of a large-dip-angle trash rack comprises a die body system and a suspension system; the die body system comprises trash rack-shaped templates spliced by panels, and ribs and support trusses are arranged among the templates; a working platform is laid on the upper surface of the die body system; a hydraulic control system is arranged on the working platform; the suspension system comprises a suspension support frame with a truss structure, and the suspension support frame is fixed on the upper platform of the trash rack through anchor bars and steel supports; a plurality of groups of suspension pull rods are connected below the suspension support frame, and the bottom ends of the suspension pull rods are connected with the truss of the die body system through a hydraulic control system; the hanging angle of the hanging pull rod is consistent with the angle of the trash rack; a concrete construction system is arranged above the mould body; the lower surface of the die body system is connected with a defect eliminating and maintaining system.
Preferably, the template is matched with the trash rack groove and the trash remover track to slide; the trash rack groove and the trash remover rail are connected with the rock mass behind the trash rack through anchor rods and support tie anchor bars; the template is provided with a limiting device to offset the movement of the die body caused by the lateral pressure of the concrete.
Preferably, the hydraulic control system comprises a control console and a jack connected with the die body system; the jack connects the die body system with the lower end of the suspension pull rod.
Preferably, the pull rod of the jack is provided with an automatic leveler.
Preferably, the concrete construction system comprises a receiving hopper, wherein the receiving hopper is arranged on the upper surface of the suspension support frame; the bottom of the receiving hopper is connected with a distributor through a chute, and the distributor is connected with the upper surface of the die body system.
Preferably, the distributor is connected with a plurality of distributing grooves, and the distributing grooves face to a plurality of filling areas of the template.
Preferably, the defect-eliminating maintenance system comprises an auxiliary disc hung on the lower surface of the working platform, a water pipe is arranged on the auxiliary disc, and one end of the water pipe is connected with the sprayer.
Preferably, a fence and a safety net are arranged around the working platform and the auxiliary plate.
Preferably, gaps are reserved between the template and the trash rack groove and between the template and the trash remover rail so as to facilitate sliding.
Preferably, the construction method of the one-step forming suspension type slip form of the large-inclination trash rack comprises the following steps:
s1, manufacturing and installing a suspension support frame: manufacturing a suspension support frame on the upper surface of the upper platform of the trash rack by using a steel truss structure, fixing the suspension support frame on the upper surface of the upper platform of the trash rack by using anchor bars, and increasing a certain number of steel supports to ensure the strength and rigidity of the suspension support frame;
s2, binding steel bars: according to the design requirements of the trash rack, steel bars are bound in place from bottom to top at one time and are firmly connected with the erection bars, the tie bar system and the anchor rods, and the anchor rods are driven into rock masses on the side surface of the upper platform of the trash rack;
s3, installing a rail: simultaneously binding steel bars, synchronously installing a trash rack groove and a trash remover rail according to design requirements, arranging a certain number of supporting and pulling anchor bars, and connecting the trash rack groove and the trash remover rail with an anchor rod through the supporting and pulling anchor bars; the top of the track can be connected with a suspension support frame to increase the strength and stability;
s4, die body manufacturing: assembling steel plates or shaped steel templates into a trash rack-shaped mold according to design requirements in a manufacturing workshop, using the section steel for ribbing, and arranging a support truss in the templates; checking and accepting after pre-assembling, numbering and disassembling for transportation after being qualified;
s5, die body installation: temporarily fixing the auxiliary disc, and paving a steel plate or a template on the upper surface of the template to manufacture a working platform; then the jack is fixed to the die body system by bolts; fixing the upper end of a suspension pull rod on a suspension support frame, penetrating the lower end of the suspension pull rod into a jack, connecting a hydraulic oil pipe with the jack and a control console, and connecting a power supply; after all the systems are installed, carrying out die body no-load test, and installing an automatic leveler through measurement;
s6, installing a concrete conveying system: after the die body is in place, arranging a receiving hopper on a suspension support of a trash rack platform, arranging a distributor and a distributor groove on a working platform, arranging a water pipe on an auxiliary disc, and suspending a blanking chute barrel or chute by using a steel wire rope;
s7, concrete construction: transporting the concrete to a receiving hopper on a trash rack platform, slipping the concrete into a distributor on a working platform through a chute or a slipping barrel, symmetrically warehousing and uniformly warehousing the concrete to a filling area of a template by using a material distributing groove, and uniformly vibrating the concrete in layers by using a flexible shaft vibrating rod; the principles of sequential warehousing, layered leveling, uniform vibration and synchronous sliding lifting are strictly executed;
s8, sliding and lifting the sliding die: the concrete primary pouring and the slip form primary sliding lifting are carried out according to the following six steps:
1. pouring concrete or mortar with the thickness of 3-5cm and semi-aggregate;
2. pouring a second layer of concrete according to the layering thickness of not more than 30 cm;
3. when the casting thickness reaches 70cm, sequentially sliding and lifting for 1-2 strokes to cast a third layer of concrete and a fourth layer of concrete, and checking whether the strength of the demolded concrete is proper;
4. sliding and lifting for 2 strokes after the fourth layer is poured, and continuously pouring the fifth layer of concrete;
5. after the fifth layer of concrete is poured, sliding and lifting for 4-6 strokes, and pouring a sixth layer of concrete;
6. after the sixth layer of concrete is poured, the sixth layer of concrete slides and rises for 8-10 strokes, and if no abnormal phenomenon exists, normal pouring and sliding and rising can be carried out;
wherein the concrete pouring adopts layered symmetrical pouring, and the layered thickness is not more than 30 cm; the sliding mode is slowly lifted for the first time, in the process, a hydraulic device, a die body structure and related facilities are comprehensively and systematically checked under the load condition, problems are found and processed, and normal sliding can be carried out after all the sliding modes are normal; when the concrete is shifted to normal sliding lift, continuous operation is kept, an operator observes the surface quality of the demolded concrete, and proper sliding lift time and sliding lift speed are determined by combining comprehensive tests such as concrete characteristics, feeding strength, environment temperature and demolding strength; continuously observing and recording the deformation condition of the track in the sliding and lifting process; the concrete is continuously supplied in the slip-form process;
carrying out a concrete solid solidification test for 4-6 hours before concrete pouring: the test criteria are as follows:
the demolded concrete surface should not have the phenomena of flowing and pulling crack, the depth of the finger print is less than 1mm after being pressed, and the finger print can be smeared by a trowel; if the surface of the demoulded concrete is flat, finishing treatment can not be carried out; if the surface of the demolded concrete has defects, the surface of the concrete is required to be repaired immediately;
s9, concrete scarcity eliminating and curing: after demoulding, an operator works on the auxiliary plate, performs primary pulp repair on the concrete by using a water pipe or a curing agent, cleans the track in time, and takes reinforcement and protection measures if necessary.
The invention provides a large-dip-angle trash rack one-step forming suspension type slip form and a construction method, which have the following beneficial effects:
1. simple structure, the ann tears the convenience open, has reduced loaded down with trivial details scaffold frame, the procedure such as template ann tears open, and engineering cost is low, and construction speed is fast, guarantees concrete continuous construction.
2. The reinforcing steel bars are bound in place at one time, so that the quality control is facilitated; the track is installed once, which is beneficial to the precision control; the second-stage concrete is cancelled, the construction process is simplified, the construction process is optimized, the construction period is greatly shortened compared with the traditional process, and the engineering cost is controllable.
3. The concrete construction process is visual and controllable, the concrete is placed in a warehouse, leveled and vibrated in a certain range on the upper opening of the template, the operation is convenient and easy to control, the uniform placement, layered leveling and dense vibration can be fully ensured, and the inherent quality of the concrete is facilitated.
4. The demoulding accords with the concrete strength pouring rule and has no construction joint. The demolding strength of the concrete is controlled to be 0.1-0.3 MPa, the concrete is still in the initial setting period, the pouring quality of the concrete can be timely checked after demolding, and surface defects can be timely treated, so that the surface quality can be guaranteed, and the surface attractiveness can be guaranteed; the watering maintenance is carried out on the auxiliary plate in time, continuously and uniformly, and the concrete strength is also ensured.
5. The working environments of the suspension support frame, the working disc, the auxiliary disc and the like are totally closed, so that the working environment is improved, and a plurality of potential safety hazards are reduced; the labor organization is simple, and the safe construction is guaranteed.
Drawings
Fig. 1 is a schematic plan view of a suspended sliding form of the present invention.
Fig. 2 is a longitudinal section structure schematic view of a suspended sliding form of the invention.
The reference numbers in the figures are: the device comprises a trash rack platform 1, anchor bars 2, steel supports 3, steel bars 4, erection bars, a tie bar system 5, anchor rods 6, a trash rack groove 7, a trash remover track 8, support tie bars 9, a suspension support frame 10, an auxiliary disc 11, a working platform 12, a jack 13, a suspension pull rod 14, a control console 15, an automatic leveler 16, a template 17, a distributor 18, a distributor groove 19, a water pipe 20, a slide pipe 21 and a receiving hopper 22.
Detailed Description
Specific embodiments of the invention are provided below with reference to the accompanying drawings.
As shown in fig. 1 to 2, a suspension type slip form for one-step forming of a large-inclination trash rack comprises a mold body system and a suspension system; the die body system comprises templates 17 in the shape of trash racks formed by splicing panels, and ribs and supporting trusses are arranged among the templates 17; a working platform 12 is laid on the upper surface of the die body system; a hydraulic control system is arranged on the working platform 12; the suspension system comprises a suspension support frame 10 with a truss structure, and the suspension support frame 10 is fixed on the rock mass surface of the trash rack platform 1 through anchor bars 2 and steel supports 3; a plurality of groups of suspension pull rods 14 are connected below the suspension support frame 10, and the bottom ends of the suspension pull rods 14 are connected with the truss of the die body system through a hydraulic control system; the suspension angle of the suspension pull rod 14 is consistent with the inclination angle of the side surface of the trash rack platform 1; a concrete construction system is arranged on the upper surface of the suspension system; the lower surface of the die body system is connected with a defect eliminating and maintaining system.
Preferably, the suspension stays 14 are provided in multiple sets of tie rods, each set comprising 2 scaffold steel tubes of 48mm diameter.
Preferably, the template 17 is matched with the trash rack groove 7 and the trash remover rail 8 to slide; the trash rack groove 7 and the trash remover rail 8 are connected with the rock mass behind the trash rack through anchor rods 6 and support anchor bars 92; the form 17 is provided with a stop means to counteract the movement of the mould body caused by the lateral pressure of the concrete.
Preferably, the hydraulic control system comprises a control console 15 and jacks 13 connected to the die body system; the jack 13 connects the die body system with the lower end of the suspension pull rod 14; the suspension pull rods 14 are movably connected with the track and the reinforcing anchor bars 2 of the reinforcing steel bars 4 at certain intervals so as to ensure that the suspension angle is kept unchanged.
Preferably, the pull rod of the jack 13 is provided with an automatic leveler 16; the jack 13 is an HM-100 type hydraulic special jack, and the console 15 is an YKT-36 type hydraulic console 15.
Preferably, the concrete construction system includes a receiving hopper 22, the receiving hopper 22 being installed on the upper surface of the suspended support frame 10; the bottom of the receiving hopper 22 is connected with the distributor 18 through a chute 21, and the distributor 18 is connected with the upper surface of the die body system; the chute 21 is provided with 2 times and is respectively connected with 2 distributors 18.
Preferably, several distributing channels 19 are connected to the distributor 18, the distributing channels 19 facing towards the filling areas of the formwork 17.
Preferably, the defect-eliminating maintenance system comprises an auxiliary disc 11 hung on the lower surface of the working platform 12, a water pipe 20 is arranged on the auxiliary disc 11, and one end of the water pipe 20 is connected with the sprayer.
Preferably, a fence and a safety net are provided around the working platform 12 and the auxiliary plate 11.
Preferably, a gap of 20mm is reserved between the template 17 and the trash rack groove 7 and the trash remover rail 8 so as to facilitate sliding.
Preferably, the construction method of the one-step forming suspension type slip form of the large-inclination trash rack comprises the following steps:
s1, manufacturing and installing the suspension support frame 10: manufacturing a suspension support frame 10 on the upper surface of the upper platform of the trash rack by using a steel truss structure, fixing the suspension support frame 10 on the upper surface of the upper platform of the trash rack by using anchor bars 2, and adding a certain number of steel supports 3 to ensure the strength and rigidity of the suspension support frame 10;
s2, binding of steel bars 4: according to the design requirements of the trash rack, the reinforcing steel bars 4 are bound in place from bottom to top and are firmly connected with the erection bars, the tie bar system 5 and the anchor rods 6, and the anchor rods 6 are driven into rock mass behind the trash rack;
s3, installing a rail: simultaneously binding the reinforcing steel bars 4, synchronously installing a trash rack groove 7 and a trash remover track 8 according to design requirements, arranging a certain number of supporting anchor pulling bars 9, and connecting the trash rack groove 7 and the trash remover track 8 with an anchor rod 6 through the supporting anchor pulling bars 9; the top of the track may be connected to a suspended support frame 10 for added strength and stability;
s4, die body manufacturing: assembling 6mm steel plates or shaped steel templates 17 into a trash rack-shaped mold according to design requirements in a manufacturing workshop, ribbing by using section steel, and arranging a support truss in the templates 17; checking and accepting after pre-assembling, numbering and disassembling for transportation after being qualified; the height of the template 17 is set to be 1.2-1.5 m;
s5, die body installation: firstly, temporarily fixing the auxiliary disc 11, and then paving a steel plate or a template 17 on the upper surface of the template 17 to manufacture a working platform 12; the jack 13 is then bolted to the die body system; fixing the upper end of a suspension pull rod 14 on a suspension support frame 10, penetrating the lower end of the suspension pull rod 14 into a jack 13, connecting a hydraulic oil pipe with the jack 13 and a control console 15, and connecting a power supply; after all the systems are installed, performing a die body no-load test, and installing the automatic leveler 16 through measurement;
s6, installing a concrete conveying system: after the die body is in place, arranging a receiving hopper 22 on a suspension support of the trash rack platform 1, arranging a distributor 18 and a distributor groove 19 on the working platform 12, arranging a water pipe 20 on the auxiliary disc 11, and suspending a blanking chute barrel or chute 21 by using a steel wire rope;
s7, concrete construction: transporting the concrete to a receiving hopper 22 on the trash rack platform 1, slipping the concrete into a distributor 18 on the working platform 12 through a chute 21 or a slipping barrel, symmetrically warehousing and uniformly warehousing the concrete to a filling area of the template 17 by utilizing a material-distributing groove 19, and uniformly vibrating in layers by utilizing a flexible shaft vibrating rod; the principles of sequential warehousing, layered leveling, uniform vibration and synchronous sliding lifting are strictly executed;
s8, sliding and lifting the sliding die: the concrete primary pouring and the slip form primary sliding lifting are carried out according to the following six steps:
1. pouring concrete or mortar with the thickness of 3-5cm and semi-aggregate;
2. pouring a second layer of concrete according to the layering thickness of not more than 30 cm;
3. when the casting thickness reaches 70cm, sequentially sliding and lifting for 1-2 strokes to cast a third layer of concrete and a fourth layer of concrete, and checking whether the strength of the demolded concrete is proper;
4. sliding and lifting for 2 strokes after the fourth layer is poured, and continuously pouring the fifth layer of concrete;
5. after the fifth layer of concrete is poured, sliding and lifting for 4-6 strokes, and pouring a sixth layer of concrete;
6. after the sixth layer of concrete is poured, the sixth layer of concrete slides and rises for 8-10 strokes, and if no abnormal phenomenon exists, normal pouring and sliding and rising can be carried out;
wherein the concrete pouring adopts layered symmetrical pouring, and the layered thickness is not more than 30 cm; the sliding mode is slowly lifted for the first time, in the process, a hydraulic device, a die body structure and related facilities are comprehensively and systematically checked under the load condition, problems are found and processed, and normal sliding can be carried out after all the sliding modes are normal; when the concrete is shifted to normal sliding lift, continuous operation is kept, an operator observes the surface quality of the demolded concrete, and proper sliding lift time and sliding lift speed are determined by combining comprehensive tests such as concrete characteristics, feeding strength, environment temperature and demolding strength; continuously observing and recording the deformation condition of the track in the sliding and lifting process; the concrete is continuously supplied in the slip-form process;
carrying out a concrete solid solidification test for 4-6 hours before concrete pouring: the test criteria are as follows:
the demolded concrete surface should not have the phenomena of flowing and pulling crack, the depth of the finger print is less than 1mm after being pressed, and the finger print can be smeared by a trowel; if the surface of the demoulded concrete is flat, finishing treatment can not be carried out; if the surface of the demolded concrete has defects, the surface of the concrete is required to be repaired immediately;
s9, concrete scarcity eliminating and curing: after demoulding, an operator works on the auxiliary disc 11, and performs primary pulp repair on the concrete by using the water pipe 20 or the curing agent, and timely cleans the track, and takes reinforcement and protection measures if necessary.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and features in the embodiments and examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.

Claims (10)

1. The utility model provides a big inclination trash rack one shot forming suspension type slipform which characterized in that: comprises a die body system and a suspension system; the die body system comprises templates (17) in the shape of trash racks formed by splicing panels, and ribs and supporting trusses are arranged among the templates; a working platform (12) is laid on the upper surface of the die body system; a hydraulic control system is arranged on the working platform (12); the suspension system comprises a suspension support frame (10) with a truss structure, and the suspension support frame (10) is fixed on the upper platform (1) of the trash rack through anchor bars (2) and steel supports (3); a plurality of groups of suspension pull rods (14) are connected below the suspension support frame (10), and the bottom ends of the suspension pull rods (14) are connected with a truss of the die body system through hydraulic jacks; the suspension angle of the suspension pull rod (14) is consistent with the angle of the trash rack; a concrete conveying system is arranged above the die body system along the installed steel bars and the track; and a defect eliminating and maintaining system is connected below the die body system.
2. The large inclination trash rack one-shot forming suspended slipform of claim 1, characterized in that: the template (17) is matched with the plurality of trash rack grooves (7) and the trash remover track (8) to slide; the trash rack groove (7) and the trash remover rail (8) are connected with the rock mass on the rear side of the trash rack through anchor rods (6) and support anchor tie bars (9).
3. The large inclination trash rack one-shot forming suspended slipform of claim 1, characterized in that: the hydraulic control system comprises a control console (15) and a jack (13) which are connected with the die body system; the mould body system is connected with the lower end of the suspension pull rod (14) by a jack (13); the number of the jacks (13) is multiple, and the jacks (13) are arranged beside the trash remover track (8).
4. The large inclination trash rack one-shot forming suspended slipform of claim 3, characterized in that: and an automatic leveler (16) is arranged on a pull rod of the jack (13).
5. The large inclination trash rack one-shot forming suspended slipform of claim 1, characterized in that: the concrete construction system comprises a receiving hopper (22), wherein the receiving hopper (22) is arranged on the upper surface of the suspension support frame (10); the bottom of the receiving hopper (22) is connected with a distributor (18) through a chute (21), and the distributor (18) is connected with the upper surface of the die body system.
6. The large inclination trash rack one-shot forming suspended slipform of claim 5, characterized in that: the distributor (18) is connected with a plurality of distributing grooves (19), and the distributing grooves (19) face a plurality of filling areas of the template (17).
7. The large inclination trash rack one-shot forming suspended slipform of claim 1, characterized in that: the defect eliminating maintenance system comprises an auxiliary disc (11) hoisted on the lower surface of the working platform (12), a water pipe (20) is arranged on the auxiliary disc (11), and one end of the water pipe (20) is connected with the sprayer.
8. The large inclination trash rack one-shot forming suspended slipform of claim 1, characterized in that: and fences and safety nets are arranged around the working platform (12) and the auxiliary disc (11).
9. The large inclination trash rack one-shot forming suspended slipform of claim 1, characterized in that: gaps are reserved among the template (17), the trash rack groove (7) and the trash remover track (8) so as to facilitate sliding.
10. The construction method of the one-step forming suspension type slip form of the large-inclination trash rack according to claims 1-9, characterized in that: it comprises the following steps:
s1, manufacturing and installing a suspension support frame (10): manufacturing a suspension support frame (10) on the upper surface of the trash rack upper platform (1) by using a steel truss structure, fixing the suspension support frame (10) on the upper surface of the trash rack upper platform (1) by using anchor bars (2), and increasing a certain number of steel supports (3) to ensure the strength and rigidity of the suspension support frame (10);
s2, binding of steel bars (4): according to the design requirements of the trash rack, the reinforcing steel bars (4) are bound in place from bottom to top and are firmly connected with the erection bars, the tie bar system (5) and the anchor rods (6), and the anchor rods (6) are driven into a rock mass;
s3, installing a rail: simultaneously binding the reinforcing steel bars (4), synchronously installing a trash rack groove (7) and a trash remover track (8) according to design requirements, arranging a certain number of supporting anchor pulling ribs (9), and connecting the trash rack groove (7) and the trash remover track (8) with the anchor rods (6) through the supporting anchor pulling ribs (9); the top of the track can be connected with a suspension support frame (10) to increase the strength and stability;
s4, die body manufacturing: assembling steel plates or shaped steel templates into a trash rack-shaped mold according to design requirements in a manufacturing workshop, using profile steel for ribbing, and arranging a support truss in the template (17); checking and accepting after pre-assembling, numbering and disassembling for transportation after being qualified;
s5, die body installation: firstly, temporarily fixing the auxiliary disc (11), and then paving a steel plate or a template on the upper surface of the template (17) to manufacture a working platform (12); then the jack (13) is fixed to the die body system by bolts; the upper end of a suspension pull rod (14) is fixed on a suspension support frame (10), the lower end of the suspension pull rod (14) penetrates into a jack (13), a hydraulic oil pipe is connected with the jack (13) and a control console (15), and a power supply is connected; after all the systems are installed, carrying out die body no-load test, and installing an automatic leveler (16) through measurement;
s6, installing a concrete conveying system: after the die body is in place, arranging a receiving hopper (22) on a suspension support (10) of a trash rack platform (1), arranging a distributor (18) and a distributing groove (19) on a working platform (12), arranging a water pipe (20) on an auxiliary disc (11), and suspending a blanking chute barrel or chute (21) by using a steel wire rope;
s7, concrete construction: transporting concrete to a receiving hopper (22) on a trash rack platform (1), slipping the concrete into a distributor (18) on a working platform (12) through a chute (21) or a chute barrel, symmetrically warehousing and uniformly warehousing the concrete to a filling area of a template (17) by using a material distributing groove (19), and uniformly vibrating in layers by using a flexible shaft vibrating rod; the principles of sequential warehousing, layered leveling, uniform vibration and synchronous sliding lifting are strictly executed;
s8, sliding and lifting the sliding die: the concrete primary pouring and the slip form primary sliding lifting are carried out according to the following six steps:
pouring concrete or mortar with the thickness of 3-5cm and semi-aggregate;
pouring a second layer of concrete according to the layering thickness of not more than 30 cm;
when the casting thickness reaches 70cm, sequentially sliding and lifting for 1-2 strokes to cast a third layer of concrete and a fourth layer of concrete, and checking whether the strength of the demolded concrete is proper;
sliding and lifting for 2 strokes after the fourth layer is poured, and continuously pouring the fifth layer of concrete;
after the fifth layer of concrete is poured, sliding and lifting for 4-6 strokes, and pouring a sixth layer of concrete;
after the sixth layer of concrete is poured, the sixth layer of concrete slides and rises for 8-10 strokes, and if no abnormal phenomenon exists, normal pouring and sliding and rising can be carried out;
wherein the concrete pouring adopts layered symmetrical pouring, and the layered thickness is not more than 30 cm; the sliding mode is slowly lifted for the first time, in the process, a hydraulic device, a die body structure and related facilities are comprehensively and systematically checked under the load condition, problems are found and processed, and normal sliding can be carried out after all the sliding modes are normal; when the concrete is shifted to normal sliding lift, continuous operation is kept, an operator observes the surface quality of the demolded concrete, and proper sliding lift time and sliding lift speed are determined by combining comprehensive tests such as concrete characteristics, feeding strength, environment temperature and demolding strength; continuously observing and recording the deformation condition of the track in the sliding and lifting process; the concrete is continuously supplied in the slip-form process;
carrying out a concrete solid solidification test for 4-6 hours before concrete pouring: the test criteria are as follows:
the demolded concrete surface should not have the phenomena of flowing and pulling crack, the depth of the finger print is less than 1mm after being pressed, and the finger print can be smeared by a trowel; if the surface of the demoulded concrete is flat, finishing treatment can not be carried out; if the surface of the demolded concrete has defects, the surface of the concrete is required to be repaired immediately;
s9, concrete scarcity eliminating and curing: after demoulding, an operator works on the auxiliary plate (11), performs primary pulp repair on the concrete by using the water pipe (20) or the curing agent, cleans the track in time, and takes reinforcement and protection measures if necessary.
CN202011023929.8A 2020-09-25 2020-09-25 Large-inclination-angle trash rack one-step forming suspension type slip form and construction method Pending CN112095560A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011023929.8A CN112095560A (en) 2020-09-25 2020-09-25 Large-inclination-angle trash rack one-step forming suspension type slip form and construction method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011023929.8A CN112095560A (en) 2020-09-25 2020-09-25 Large-inclination-angle trash rack one-step forming suspension type slip form and construction method

Publications (1)

Publication Number Publication Date
CN112095560A true CN112095560A (en) 2020-12-18

Family

ID=73755305

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011023929.8A Pending CN112095560A (en) 2020-09-25 2020-09-25 Large-inclination-angle trash rack one-step forming suspension type slip form and construction method

Country Status (1)

Country Link
CN (1) CN112095560A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101156448B1 (en) * 2011-11-07 2012-06-13 주식회사 와텍 A Trash Rack of Electric Power Station Sluice
CN103074871A (en) * 2013-01-30 2013-05-01 中国葛洲坝集团股份有限公司 Arc-shaped slope concrete sliding and lifting template
CN110904969A (en) * 2019-11-21 2020-03-24 中国水利水电第七工程局有限公司 High steep slope slab corridor structure concrete placement slipform system
CN111395271A (en) * 2020-04-24 2020-07-10 中国水利电力对外有限公司 Suspended sliding form for second-stage concrete lining of gate slot and construction method
CN112160290A (en) * 2020-10-14 2021-01-01 浙江世润建创科技发展有限公司 Construction device and construction method for cast-in-place concrete panel of upstream slope of dam

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101156448B1 (en) * 2011-11-07 2012-06-13 주식회사 와텍 A Trash Rack of Electric Power Station Sluice
CN103074871A (en) * 2013-01-30 2013-05-01 中国葛洲坝集团股份有限公司 Arc-shaped slope concrete sliding and lifting template
CN110904969A (en) * 2019-11-21 2020-03-24 中国水利水电第七工程局有限公司 High steep slope slab corridor structure concrete placement slipform system
CN111395271A (en) * 2020-04-24 2020-07-10 中国水利电力对外有限公司 Suspended sliding form for second-stage concrete lining of gate slot and construction method
CN112160290A (en) * 2020-10-14 2021-01-01 浙江世润建创科技发展有限公司 Construction device and construction method for cast-in-place concrete panel of upstream slope of dam

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
孙百军: "滑模技术在白山抽水蓄能电站进水口拦污栅墩施工中的应用", 《水利水电技术》 *
徐崇仁: "白山水电站拦污栅墩滑模的设计与施工", 《水力发电》 *
河海大学《水利大辞典》编辑修订委员会: "《水利大辞典》", 31 October 2015, 上海辞书出版社 *
百度: "https://www.powerchina.cn/art/2020/6/29/art_7449_815219.html", 《老挝南公1水电站"大倾角拦污栅栅轨一次成型悬吊滑模"启滑》 *

Similar Documents

Publication Publication Date Title
CN103161126A (en) Road bridge variable section hollow high pier slip-form construction method
CN105317137A (en) Prefabricated wall, prefabricated wallboard, construction method of prefabricated wall and production method of prefabricated wallboard
CN110259184B (en) Column pulling construction method based on joist and column pulling combined supporting and jacking system
CN109404010B (en) Aluminum tunnel mold system and operation method thereof
CN107542268A (en) The reverse construction method of installation of stage steel construction in a kind of grand theater room
CN111113628B (en) Construction method for spraying prefabricated T-shaped beam
CN111618976A (en) Construction method for prefabricated part fixed die table of fabricated building
CN110578338A (en) System capable of moving aluminum alloy template integrally and operation method
CN213571944U (en) Suspension type slip form for one-step forming of large-inclination trash rack
CN112095560A (en) Large-inclination-angle trash rack one-step forming suspension type slip form and construction method
CN110757629B (en) Quality-controllable assembled stair mold and stair manufacturing method
CN106368362A (en) Hollow floor for GBF high-infusion alloy thin-walled square boxes and manufacturing method
CN210562056U (en) Adjustable continuous four-rod self-adaptive drawing die for overflow surface curved surface concrete construction
CN111395271A (en) Suspended sliding form for second-stage concrete lining of gate slot and construction method
CN110700105B (en) Synchronous construction method for high pier column and tie beam and template used in same
CN212452646U (en) Gradual change type rail drawing die for overflow surface concrete lining
CN202064281U (en) Slip form frame
CN215165300U (en) Dam panel concrete hydraulic sliding formwork device
CN215052768U (en) Slip form trolley
CN111074950B (en) Pre-closed advanced water stop post-cast strip for basement outer wall and construction method
CN212103934U (en) Suspended sliding form for second-stage concrete lining of gate slot
RU2325476C2 (en) Technique of replacing support parts of bridge
CN212176540U (en) Hydraulic climbing formwork system formwork
CN208934709U (en) The telescoping steel form of tunnel side wall concrete lining cutting
CN210068189U (en) Circumferential slip form construction device for concrete lining of full-circle tunnel

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination