CN114481968A - Reinforcing structure of rock block concrete dam and construction method - Google Patents
Reinforcing structure of rock block concrete dam and construction method Download PDFInfo
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- CN114481968A CN114481968A CN202111682485.3A CN202111682485A CN114481968A CN 114481968 A CN114481968 A CN 114481968A CN 202111682485 A CN202111682485 A CN 202111682485A CN 114481968 A CN114481968 A CN 114481968A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/02—Fixed barrages
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/16—Fixed weirs; Superstructures or flash-boards therefor
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/30—Flood prevention; Flood or storm water management, e.g. using flood barriers
Abstract
The invention relates to a reinforcing structure of a rock-fill concrete dam and a construction method, comprising the following steps: 1) construction preparation; 2) chiseling the old weir body surface; 3) installing a top steel bar planting construction safety protection platform; 4) carrying out reinforcement planting construction on the top of the stone concrete; 5) installing a top hanging type operating platform; 6) installing a stone concrete bar planting and shaping support; 7) carrying out steel bar planting construction on the slope surface of the rock block concrete; 8) carrying out steel bar planting construction on the bottom surface of the stone concrete; 9) constructing a fixed side mold support of the ground anchor pull rod; 10) carrying out large-volume concrete riprap construction; 11) installing an inverted T-shaped quick drainage system; 12) pouring a new weir body in sections; 13) and (5) erecting a fish scale round pool template system. The invention has the beneficial effects that: the fish scale round pool template system adopts unit assembly, is quick to assemble and disassemble, has exquisite structural design and convenient assembly, improves the installation efficiency, has short construction period, can realize recycling and can effectively save the cost.
Description
Technical Field
The invention relates to a reinforcing structure and a construction method of a rock-fill concrete dam, belongs to the field of civil engineering, and is suitable for reinforcing construction of the rock-fill concrete dam.
Background
The weir dam belongs to a traditional dam type in China, and has the advantages of simple structure, convenience in construction and low cost, so that the weir dam is widely applied to rivers in vast mountainous areas. In order to repair the barrage, the safety, reliability and durability of the barrage need to be improved, so that the aim of treating both symptoms and root causes is fulfilled.
But the old weir body reinforcement belongs to large-volume concrete, how can the reinforcement of a large formwork meet the requirements of rigidity, strength and stability? The stone throwing rate of large-volume concrete is 15%, a tower crane cannot be used for allocation and transportation, and stone can be transported into a bin by matching a crane and an excavator, and then the stone is manually thrown away, so how is the stone throwing construction safely and efficiently carried out? In addition, the cement hydration heat of the mass concrete is not easy to dissipate quickly, and the mass concrete stores heat in the mass concrete, so that the temperature is greatly increased, and cracks caused by the temperature are easy to generate. Therefore, the control of the temperature is the most prominent problem in the construction of mass concrete. The volumetric changes of the concrete due to the hydration heat generated by the cement must be treated or accounted for in order to minimize the concrete cracks.
Aiming at the problems, the invention aims to provide a reinforcing structure and a construction method of a rock-fill concrete weir dam, which can improve the reinforcing quality of the weir dam, reduce the bleeding phenomenon of large-volume concrete and ensure the stability and safety of a dam body.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a reinforced structure of a rock-fill concrete dam and a construction method.
The construction method of the reinforced structure of the block concrete barrage comprises the following steps:
1) construction preparation;
2) and (3) chiseling construction of the old weir body surface: chiseling the chiseling section of the slope of the old weir body, the chiseling section of the bottom of the old weir body and the chiseling section of the top surface of the old weir body before pouring the new weir body;
3) installing a top bar planting construction safety protection platform: drilling a hole in the side face of the top of the original rock concrete weir body, placing a top bar planting construction safety protection platform in place, embedding an inner side fixing plate at the top of the original rock concrete weir body, calibrating the position of a top veneering protection steel plate, and then fixing an outer side vertical fixing plate on the side face of the top of the original rock concrete weir body;
4) and (3) carrying out reinforcement planting construction on the top of the stone concrete: the drilling equipment aims at the protective steel plate preformed hole of the top veneering protective steel plate to drill, and then bar planting construction of the weir body top surface anchor bars is carried out;
5) installing a top hanging type operation platform: firstly, removing a top bar planting construction safety protection platform, then installing a suspension platform in place, and then fixing an L-shaped dam crest hoop support on the top of the original rock concrete weir body; a hanging type operating platform is arranged below the hanging platform;
6) installing a block stone concrete bar planting and finalizing support: firstly, placing the bar planting drilling and shaping support in place, and simultaneously carrying out traction connection and pressing fixation on the bar planting drilling and shaping support;
7) carrying out steel bar planting construction on the slope surface of the rock block concrete;
8) and (3) carrying out steel bar planting construction on the bottom surface of the stone concrete: drilling the bottom surfaces of the original rock concrete weirs of the newly-poured weir body first section, the newly-poured weir body second section and the newly-poured weir body third section by using drilling equipment, and then performing bar planting construction of bottom anchor bars;
9) constructing a fixed side mold support of the ground anchor pull rod: drilling a hole on the bottom surface of the original rock concrete weir body, then inserting a ground anchor pull rod, pouring fine rock concrete, installing a side frame formwork in place, and connecting the side frame formwork with the ground anchor pull rod through a back-pull steel bar;
10) carrying out large-volume concrete riprap construction;
11) installing an inverted T-shaped quick drainage system: a bleeding water suction pump is arranged on the rock surface near the top of the supporting structure, and an inverted T-shaped quick drainage conduit is arranged;
12) pouring a new weir body in sections: placing a bottom plate steel reinforcement framework, then respectively pouring a newly poured weir body section, a newly poured weir body section and a newly poured weir body section in sequence, and simultaneously carrying out laitance bleeding treatment on the mass concrete by utilizing a bleeding water suction pump matched with an inverted T-shaped quick drainage guide pipe;
13) building a fish scale round pool template system: sequentially erecting a fish scale round pool template system on the top surfaces of the newly-poured weir body first section, the newly-poured weir body second section and the newly-poured weir body third section;
14) pouring a stilling pool: placing and fixing a stilling pool steel reinforcement framework between the scale round pool unit templates, pouring to form a semicircular stilling pool, then installing a template of a stilling pool straight line section at the bottom of the semicircular stilling pool, and pouring the pool wall of the stilling pool straight line section;
15) installing a weir dam top arc section moulding support system: when a section of newly-poured weir body is poured, arranging an embedded anchor bar at the top of the newly-poured weir body, fixing a slide rail fixing plate at the top of the section of the newly-poured weir body through the embedded anchor bar, placing a counterweight sliding trolley in place, placing a vertical slide bar of a shaping support at the top arc section of the weir dam in a slide rail groove, adjusting the position of a sliding scraper, and then connecting a tensioning steel wire rope at the bottom of a transverse connecting rod with the counterweight sliding trolley;
16) pouring and strickling the arc section of the weir dam for shaping construction: installing a template of the top arc section of the new weir body, pouring the top arc section dam body of the new weir body, leveling and shaping the top arc section dam body surface of the new weir body by using a sliding type scraper blade, and pushing a balance weight sliding trolley to realize leveling construction of the top arc section dam body surface of the new weir body at different positions.
Preferably, the method comprises the following steps: in the step 1), the construction preparation is as follows: manufacturing a weir body slope anchor bar, a weir body top surface anchor bar, a bottom anchor bar and a bottom plate steel reinforcement framework, customizing a veneering protection compression steel plate, a top veneering protection steel plate, a fish scale round pool unit template and a side frame formwork, determining the model of a bleeding water suction pump, and manufacturing a regularized alloy string bag for stone throwing.
Preferably, the method comprises the following steps: and 3) in the step 3), the side fixing screw rod of the old weir body penetrates through a preformed hole of the outer vertical fixing plate and the side hole of the top of the original rock concrete weir body, and then the fixing nut is used for realizing fixed locking.
Preferably, the method comprises the following steps: in the step 5), the end part of the hoop support at the top of the L-shaped dam is connected with the suspension platform; and (3) passing the fixing screw rod on the side surface of the old weir body through the preformed hole on the side surface of the hoop support at the top of the L-shaped dam and the drilling hole on the side surface of the top of the original stone concrete weir body, passing the fixing screw rod on the side surface of the old weir body through the preformed hole on the top of the hoop support at the top of the L-shaped dam and the drilling hole on the top of the original stone concrete weir body, locking the fixing screw rod on the side surface of the old weir body through a fixing nut, and locking the fixing screw rod on the top of the old weir body through a nut.
Preferably, the method comprises the following steps: and 6), connecting the traction steel wire rope with a pull ring of a facing protection compression steel plate at the bottom of the bar-planting drilling and shaping support, and then respectively pressing and fixing the oblique compression bar and the transverse compression bar on the top surface and the bottom of the side surface of the bar-planting drilling and shaping support.
Preferably, the method comprises the following steps: in the step 7), the construction of the reinforcing bars on the slope surface of the block stone concrete is as follows: drilling hole planting bars on the weir slope according to a mode from bottom to top, standing a constructor in a hanging type operation platform, and drilling holes on the weir slope anchor bars by adopting drilling equipment to align with preformed holes of a veneering protection compression steel plate at the bottom of a bar planting drilling and sizing support; after one layer of construction is finished, a traction winch of the hanging platform pulls the hanging type operation platform to slide up, a traction winch of the drilling and shaping support synchronously pulls the veneering protection pressing steel plate at the bottom of the bar planting drilling and shaping support to slide up, and then the next layer of bar planting construction in the drilling is carried out.
Preferably, the method comprises the following steps: and 9), stabilizing the side frame supporting formwork by adopting a plurality of rows of double-spliced steel pipes, and fixing one end of a back-pull steel bar on the plurality of rows of double-spliced steel pipes and fixing the other end of the back-pull steel bar on the ground anchor pull rod.
Preferably, the method comprises the following steps: and step 10), fixing the riprap of the mass concrete by using a shaped alloy string bag, and then conveying the shaped riprap to a specified position by using a crane to cooperate with a hoisting steel wire rope.
Preferably, the method comprises the following steps: and 11), constructing a drainage ditch, mounting one end of the inverted T-shaped quick drainage guide pipe at a pump port of a water bleeding water suction pump, and placing the top surface of mass concrete to be poured at the other end of the inverted T-shaped quick drainage guide pipe.
Preferably, the method comprises the following steps: in the step 13), the two fish scale round pool unit templates are spliced into a whole fish scale round pool template system at the splicing ear plates, then the fastening is realized by adopting the fixing piece and the fixing pin, then the top ear plates of the fish scale round pool unit templates are pulled oppositely, and the fastening is realized by the transverse pull rod and the fastening screw.
The reinforcing structure of the rock-fill concrete barrage is obtained by construction according to the construction method.
The invention has the beneficial effects that:
1. the fish scale round pool template system adopts unit assembly, is quick to assemble and disassemble, has delicate structural design, is convenient to assemble, improves the installation efficiency, has short construction period, can realize recycling and can effectively save the cost.
2. The weir dam top arc section shaping support system adopted by the invention has the advantages of high construction speed, shortened construction period, saved labor and equipment cost, improved installation efficiency, reduced manpower input, saved material waste and reduced construction cost compared with the traditional scraping mode.
3. The concrete pouring template system for reinforcing the weir body has the advantages of reasonable structure, simplified assembly and disassembly processes, shortened construction period, reduced cost and improved economic benefit.
4. The large-volume concrete bleeding and floating slurry treatment technology adopts an inverted T-shaped rapid drainage system, can be repeatedly used, reduces the bleeding phenomenon of large-volume concrete, and ensures the stability and safety of a dam body.
Drawings
FIG. 1 is a mounting diagram of a top steel bar planting construction safety protection platform;
FIG. 2 is a block rock concrete barrage reinforcement construction view;
FIG. 3 is a structural diagram of a top steel bar planting construction safety protection platform;
FIG. 4 is a structural diagram of a slope drilling and bar planting shaped support;
FIG. 5 is a schematic view of a top-mounted operator platform installation;
FIG. 6 is a schematic view of the installation of a recessed bottom mounting plate;
FIG. 7 is a schematic view of the installation of the sliding top mold quick-form setting rack;
FIG. 8 is a schematic structural view of a weir top arc shaping support;
FIG. 9 is an installation view of an inverted T-shaped quick drain;
FIG. 10 is a schematic diagram of a fish scale round pool unit template structure;
FIG. 11 is a plan view of the stilling pool construction;
FIG. 12 is a mounting diagram of a fish scale round pool template system;
FIG. 13 is a construction drawing of butt joint and assembly of fish scale round pool unit templates;
fig. 14 is a concrete pouring formwork system installation view of the reinforced weir.
Description of the reference numerals: 1-original rock concrete weir, 2-weir slope anchor bar, 3-weir top anchor bar, 4-new weir top arc section, 5-old weir slope chiseling section, 6-old weir bottom chiseling section, 7-fine rock concrete, 8-new pouring weir body section, 9-bottom anchor bar, 10-new pouring weir body section, 11-new pouring weir body section, 12-old weir top chiseling section, 13-semicircular reinforcing sleeve, 14-veneering protection compression steel plate, 15-pull ring, 16-old weir body side fixing screw, 17-fixing nut, 18-L-shaped dam top anchor ear support, 19-nut, 20-top fixing piece, 21-traction winch of hanging platform, 22-traction machine of drilling shaping support, 23-fixed pulley, 24-hanging platform, 25-lifting jack, 26-traction steel wire rope of operating platform, 27-rolling pulley, 28-traction rod, 29-traction steel wire rope, 30-protective steel wire rope, 31-protective pull ring, 32-pull ring fixing rod, 33-ground anchor pull rod, 34-lifting ring, 35-hanging operating platform, 36-oblique pressing piece, 37-oblique pressing rod, 38-oblique jack, 39-steel bar planting drilling and shaping support, 40-vertical fixing rod, 41-transverse jack, 42-transverse pressing rod, 43-transverse pressing piece, 44-lateral fastening rod, 45-vertical jack, 46-bottom fixing plate with groove, 47-groove, 48-rivet, 49-outer side vertical fixing plate, 49-steel wire rope of operating platform, 27-rolling pulley, 28-traction rod, 29-traction steel wire rope, 29-protective steel wire rope, 31-protective pull ring, 32-pull ring fixing rod, 33-ground anchor pull rod, 34-lifting ring, 35-hanging operating platform, 36-oblique pressing piece, 37-oblique pressing piece, 38-oblique pressing piece, 39-vertical fixing rod, 41-transverse pressing piece, 42-transverse pressing piece, 43-transverse pressing piece, 44-transverse fixing piece, 46-vertical fixing plate with groove, 48-rivet, 49-outer side fixing piece, and vertical fixing piece, 50-top veneering protective steel plate, 51-top bar planting construction safety protective platform, 52-inner inclined strut, 53-inner side fixing plate, 54-protective steel plate preformed hole, 55-screw, 56-fixing screw cap, 57-butt lug plate, 58-sliding type scraper, 59-transverse connecting rod, 60-sliding rail groove, 61-fixing sliding rail, 62-tensioning steel wire rope, 63-vertical sliding rod, 64-counterweight sliding trolley, 65-trolley roller, 66-embedded anchor bar, 67-sliding rail fixing plate, 68-supporting structure, 69-bleeding water suction pump, 70-drainage ditch, 71-inverted T-shaped quick drainage pipe, 72-large volume concrete, 73-bottom plate steel reinforcement framework, 74-parting joint, 75-semicircular stilling pool, etc, 76-stilling pool straight line segment, 77-top ear plate, 78-fish scale round pool unit template, 79-transverse pull rod, 80-stilling pool steel reinforcement framework, 81-fixing piece, 82-splicing ear plate, 83-fixing pin, 84-fastening screw, 85-double-spliced steel pipe, 86-side frame formwork and 87-rear pulling steel bar.
Detailed Description
The present invention will be further described with reference to the following examples. The following examples are set forth merely to aid in the understanding of the invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
As an embodiment, the construction method of the reinforced structure of the rock-fill concrete barrage comprises the following steps:
1) construction preparation: manufacturing materials such as a weir body slope anchor bar 2, a weir body top surface anchor bar 3, a bottom anchor bar 9, a bottom plate steel reinforcement framework 73 and the like, customizing a veneering protection compression steel plate 14, a top veneering protection steel plate 50, a fish scale round pool unit template 78 and a side frame supporting die 86, determining the model of a bleeding water suction pump 69, and manufacturing a shaped alloy tuck net for throwing stones;
2) and (3) chiseling construction of the old weir body surface: before a new weir body is poured, chiseling on the slope chiseling section 5 of the old weir body, the chiseling section 6 at the bottom of the old weir body and the chiseling section 12 at the top surface of the old weir body;
3) installing a top bar planting construction safety protection platform: drilling a hole in the side surface of the top of the original rock concrete weir body 1, placing a top reinforcing bar planting construction safety protection platform 51 in place, embedding an inner side fixing plate 53 at the top of the original rock concrete weir body 1, calibrating the position of a top veneering protection steel plate 50, then penetrating an old weir body side fixing screw 16 through a preformed hole of an outer side vertical fixing plate 49 and the hole in the side surface of the top of the original rock concrete weir body 1, and then realizing fixed locking by using a fixing nut 17;
4) and (3) carrying out reinforcement planting construction on the top of the stone concrete: the drilling equipment aims at the protective steel plate preformed hole 54 of the top veneering protective steel plate 50 to drill, and then bar planting construction of the weir body top surface anchor bars 3 is carried out;
5) installing a top hanging type operation platform: firstly, removing a top reinforcing bar construction safety protection platform 51, then installing a suspension platform 24 in place, then penetrating an old weir body side fixing screw 16 through a preformed hole on the side surface of an L-shaped dam crest anchor ear support 18 and a hole drilled on the top side surface of an original stone concrete weir body 1, penetrating a top fixing piece 20 through the preformed hole on the top of the L-shaped dam crest anchor ear support 18 and the hole drilled on the top of the original stone concrete weir body 1, then locking the old weir body side fixing screw 16 by using a fixing nut 17, and locking the top fixing piece 20 by using a nut 19; a hanging type operating platform 35 is arranged below the hanging platform 24;
6) installing a block stone concrete bar planting and finalizing support: : firstly, placing the steel bar planting drilling and finalizing support 39 in place, simultaneously connecting a traction steel wire rope 29 with a pull ring 15 of a veneering protection compression steel plate 14 at the bottom of the steel bar planting drilling and finalizing support 39, and then respectively pressing and fixing an oblique compression bar 37 and a transverse compression bar 42 on the top surface and the bottom of the side surface of the steel bar planting drilling and finalizing support 39;
7) and (3) carrying out steel bar planting construction on the slope surface of the block stone concrete: drilling hole planting construction is carried out on the weir body slope anchor bars 2 in a mode from bottom to top, a constructor stands in a hanging type operation platform 35, and drilling equipment is adopted to aim at the preformed holes of the veneering protection compression steel plates 14 at the bottom of the rib planting drilling and shaping support 39 to drill the weir body slope anchor bars 2; after one layer of construction is finished, a traction winch 21 of a hanging platform pulls a hanging type operation platform 35 to slide up, a traction winch 22 of the drilling and shaping support synchronously pulls a veneering protection compression steel plate 14 at the bottom of a bar-planting drilling and shaping support 39 to slide up, and then the next layer of bar-planting construction in drilling is carried out;
8) and (3) carrying out steel bar planting construction on the bottom surface of the stone concrete: drilling the bottom surfaces of the original rock concrete weir body 1 of the newly-poured weir body section 8, the newly-poured weir body section 10 and the newly-poured weir body section 11 by using drilling equipment, and then performing bar planting construction of bottom anchor bars 9;
9) constructing a fixed side mold support of the ground anchor pull rod: adopting the technology of fixing the side frame supporting formwork by the ground anchor pull rod 33, drilling a hole on the bottom surface of the original rock concrete weir body 1, then inserting the ground anchor pull rod 33, pouring the fine rock concrete 7, installing the side frame supporting formwork 86 in place, stabilizing by using a plurality of rows of double-spliced steel pipes 85, fixing the side frame supporting formwork 86 at one end of a back-pull steel bar 87 to the plurality of rows of double-spliced steel pipes 85, and fixing the other end of the back-pull steel bar 87 on the ground anchor pull rod 33;
10) and (3) stone throwing construction of mass concrete: fixing the riprap of the mass concrete 72 by using a sizing alloy string bag, and then transporting the sized riprap to a specified position by using a crane to cooperate with a hoisting steel wire rope;
11) installing an inverted T-shaped quick drainage system: a bleeding water suction pump 69 is arranged on the rock surface near the top of the supporting structure 68, meanwhile, a drainage ditch 70 needs to be built, one end of an inverted T-shaped quick drainage guide pipe 71 is arranged at the pump port of the bleeding water suction pump 69, and the other end is arranged on the top surface of mass concrete 72 needing to be poured;
12) pouring a new weir body in sections: placing a bottom plate steel reinforcement framework 73, then respectively pouring a newly poured weir body section 8, a newly poured weir body section 10 and a newly poured weir body section 11 in sequence, and simultaneously performing floating slurry bleeding treatment on the large-volume concrete 72 by utilizing a bleeding water suction pump 69 in cooperation with an inverted T-shaped quick drainage guide pipe 71;
13) building a fish scale round pool template system: sequentially erecting a fish scale round pool template system on the top surfaces of the newly-poured weir body first section 8, the newly-poured weir body second section 10 and the newly-poured weir body third section 11, specifically, splicing two fish scale round pool unit templates 78 into an integral fish scale round pool template system at a splicing lug plate 82, then fastening by adopting a fixing piece 81 and a fixing pin 83, then pulling a top lug plate 77 oppositely, and fastening by a transverse pull rod 79 and a fastening screw 84;
14) pouring a stilling pool: placing and fixing a stilling pool reinforcement cage 80 between the scale round pool unit templates 78, pouring a semicircular stilling pool 75 between the scale round pool unit templates 78, then installing a template of a stilling pool straight line section 76 at the bottom of the semicircular stilling pool 75, and pouring a pool wall of the stilling pool straight line section 76;
15) installing a weir dam top arc section moulding support system: when a section 8 of a newly-poured weir body is poured, arranging an embedded anchor bar 66 at the top of the section 8 of the newly-poured weir body, sleeving a slide rail fixing plate 67 on the embedded anchor bar 66 and fixing the embedded anchor bar 66 at the top of the section 8 of the newly-poured weir body, placing a balance weight sliding trolley 64 in place, placing a vertical slide bar 63 of a shaping support at the top arc section of the weir dam in a slide rail groove 60, adjusting the position of a sliding scraper 58, and then connecting a tensioning steel wire rope 62 at the bottom of a transverse connecting rod 59 with the balance weight sliding trolley 64;
16) pouring and strickling the arc section of the weir dam for shaping construction: installing the template of the new weir body top arc section 4, pouring the dam body of the new weir body top arc section 4, then strickling and shaping the dam body surface of the new weir body top arc section 4 by using the sliding type scraper 58, and simultaneously pushing the balance weight sliding trolley 64 to realize strickling construction of the dam body surface of the new weir body top arc section 4 at different positions.
As shown in fig. 1 to 14, the reinforcing structure of the rock block concrete barrage constructed by the construction method mainly includes: the device comprises a ground anchor pull rod 33, an outer side vertical fixing plate 49, a top veneering protection steel plate 50, a top steel bar planting construction safety protection platform 51, a sliding type scraper 58, a transverse connecting rod 59, a sliding rail groove 60, a fixed sliding rail 61, a tensioning steel wire rope 62, a vertical sliding rod 63, a counterweight sliding trolley 64, a pre-buried anchor bar 66, a sliding rail fixing plate 67, a bleeding water suction pump 69, a drainage ditch 70, an inverted T-shaped quick drainage pipe 71, a top lug plate 77, a fish scale round pool unit template 78, a transverse pull rod 79, a stilling pool steel reinforcement framework 80, a fixing piece 81, a splicing lug plate 82, a fixing pin 83, a fastening screw 84, a double-spliced steel pipe 85, a side frame supporting mould 86 and a rear pulling steel bar 87; the reinforcing system of the original rock concrete weir 1 mainly comprises a top reinforcing bar planting construction safety protection platform 51, a weir reinforcing concrete pouring template system, a fish scale round pond template system, a weir dam top arc section shaping support system and a reusable inverted T-shaped rapid drainage system; the fish scale round pool template system is used for the concrete pouring construction of the semicircular stilling pool 75 and mainly comprises fish scale round pool unit templates 78, splicing ear plates 82 and fixing pins 83; the reusable inverted-T-shaped rapid drainage system is used for the bleeding floating slurry treatment construction of large-volume concrete 72, and the bleeding floating slurry is pumped out by utilizing the inverted-T-shaped rapid drainage conduit 71.
As shown in fig. 1 and 3, the top steel bar planting construction safety protection platform 51 is hooped on the top of the original rock concrete weir 1 by using an old weir side fixing screw 16 and a fixing nut 17, and is used for drilling steel bars on the weir top surface anchor bars 3 on the top of the original rock concrete weir 1; top bar planting construction safety protection platform 51 mainly by the vertical fixed plate 49 in the outside, interior bracing 52 and inboard fixed plate 53 constitute, the vertical fixed plate 49 in the outside is fixed in former slabstone concrete weir 1 top side through old weir body side clamping screw 16 and fixation nut 17, inboard fixed plate 53 inlays admittedly at former slabstone concrete weir 1 top, is equipped with top wainscot protection steel sheet 50 in the vertical fixed plate 49 bottoms in the outside of dam crest position, 50 tops of top wainscot protection steel sheet evenly are equipped with protection steel sheet preformed hole 54.
As shown in fig. 4 to 6, the slope planting bar of the raw block stone concrete weir body 1 adopts an L-shaped dam crest hoop support 18, a hanging platform 24 and a bar planting drilling and shaping support 39, the L-shaped dam crest hoop support 18 is hooped on the top of the raw block stone concrete weir body 1 by using an old weir body side fixing screw 16, a fixing nut 17 and a top fixing piece 20, the end part of the L-shaped dam crest hoop support 18 is provided with the hanging platform 24, and a hanging operation platform 35 is arranged below the hanging platform 24; the steel bar planting drilling and shaping support 39 is placed at the top of the old weir slope chiseling section 5, can be pressed and fixed through an oblique pressure rod 37 and a transverse pressure rod 42 of the vertical pressing and fixing device, and can also slide along the slope through a traction steel wire rope 29; the inclined pressure rod 37 is connected with an inclined jack 38, and the inclined jack 38 is fixed on the side surface of the top of the vertical fixing rod 40; the transverse compression bar 42 is connected with the transverse jack 41, and the transverse jack 41 is fixed on the side surface of the middle part of the vertical fixing rod 40; the bottom of the vertical fixing rod 40 is connected with a vertical jack 45, and the vertical jack 45 is placed on a bottom fixing plate 46 with a groove.
As shown in fig. 4 to 5, the vertical pressing device includes: the device comprises an oblique pressing piece 36, an oblique pressure rod 37, an oblique jack 38, a bar-planting drilling and shaping support 39, a vertical fixing rod 40, a transverse jack 41, a transverse pressure rod 42, a transverse pressing piece 43, a lateral fastening rod 44 and a vertical jack 45; the vertical compression fixing device is nested on a bottom fixing plate 46 with a groove, the top of the bottom fixing plate 46 with the groove is symmetrically provided with grooves 47, the bottom of the bottom fixing plate 46 with the groove is provided with a rivet 48, the bottom fixing plate 46 with the groove is placed on the dam crest of the chiseling section 6 at the bottom of the old weir body, and the rivet 48 is anchored on the dam crest of the chiseling section 6 at the bottom of the old weir body; the bottom of the steel bar planting drilling and finalizing support 39 is provided with a facing protective compression steel plate 14, the top of the facing protective compression steel plate 14 is provided with a pull ring 15, the top surface of the steel bar planting drilling and finalizing support 39 is pressed and fixed through an oblique pressing piece 36 at the end part of an oblique pressing rod 37, and the side surface of the steel bar planting drilling and finalizing support 39 is pressed and fixed through a transverse pressing piece 43 at the end part of a transverse pressing rod 42.
As shown in fig. 5, a fixed pulley 23 and 2 lifting jacks 25 are arranged below the suspension platform 24, a traction winch 21 of the suspension platform and a traction winch 22 of the drilling and sizing support are arranged at the top of the suspension platform 24, and a rolling pulley 27 is arranged on the side surface of the end part of the suspension platform 24; the traction winch 21 is connected with one end of a traction steel wire rope 26 of the operating platform, and the other end of the traction steel wire rope 26 of the operating platform is connected with a hanging ring 34 at the top of a hanging type operating platform 35 through a rolling pulley 27; the traction rod 28 of the lifting jack 25 is connected with a bottom plate of a hanging type operation platform 35, a pull ring fixing rod 32 is arranged on a cross beam at the top of the hanging type operation platform 35, a protective pull ring 31 is welded at the top of the pull ring fixing rod 32, and the protective pull ring 31 is connected with a protective steel wire rope 30; the traction winch 22 of the drilling and finalizing support is connected with one end of a traction steel wire rope 29, and the other end of the traction steel wire rope 29 is connected with the pull ring 15 through a fixed pulley 23.
As shown in fig. 6, the bottom of the lateral fastening rod 44 is placed in the groove 47, the top of the lateral fastening rod 44 is provided with a semicircular reinforcing sleeve 13, the end of the semicircular reinforcing sleeve 13 is provided with a butt-joint lug plate 57, and the two semicircular reinforcing sleeves 13 are hooped at the bottom of the vertical fixing rod 40 and then fastened by a screw 55 and a fixing nut 56.
As shown in fig. 7 and 8, the shaping support system for the top arc section of the weir dam is used for sliding strickling construction of the top arc section 4 of a new weir, and mainly comprises a sliding scraper 58, a transverse connecting rod 59, a sliding rail groove 60, a fixed sliding rail 61, a tensioning steel wire rope 62, a counterweight sliding trolley 64, an embedded anchor rib 66 and a sliding rail fixing plate 67; the embedded anchor bars 66 penetrate through the preformed holes of the slide rail fixing plate 67, the slide rail fixing plate 67 is fixed at the top of one section of the newly poured weir body 8, the fixed slide rails 61 are symmetrically distributed at the top of the slide rail fixing plate 67, and the center of the top of the fixed slide rail 61 is provided with a slide rail groove 60; the shape of the sliding type scraper 58 is matched with the surface of the top arc section 4 of the new weir body, the sliding type scraper 58 is connected with a transverse connecting rod 59, vertical sliding rods 63 are symmetrically arranged below the transverse connecting rod 59, the vertical sliding rods 63 are placed in the sliding rail grooves 60, a balance weight sliding trolley 64 is arranged in the middle of each vertical sliding rod 63, one end of a tensioning steel wire rope 62 is connected with the balance weight sliding trolley 64, the other end of the tensioning steel wire rope is connected with the bottom of the transverse connecting rod 59, and trolley rollers 65 of the balance weight sliding trolley 64 are placed on a sliding rail fixing plate 67.
As shown in fig. 9, one end of the inverted T-shaped rapid drainage pipe 71 is inserted into the floating slurry of the large-volume concrete 72 at the bottom near the supporting structure 68, and the other end is connected with the bleeding water suction pump 69, and the bleeding water suction pump 69 pumps the bleeding floating slurry into the drainage ditch 70.
As shown in fig. 11, the cross sections of the first newly poured weir body segment 8, the second newly poured weir body segment 10 and the third newly poured weir body segment 11 are provided with a plurality of parting joints 74, the bottoms of the first newly poured weir body segment 8, the second newly poured weir body segment 10 and the third newly poured weir body segment 11 are provided with a stilling pool, and the stilling pool comprises a semicircular stilling pool 75 and a stilling pool straight line segment 76.
As shown in fig. 10 and fig. 12-13, the fish scale round pool template system is formed by assembling two fish scale round pool unit templates 78, the splicing ear plates 82 are fastened at the splicing positions by fixing pieces 81 and fixing pins 83, the top ear plates 77 are uniformly distributed at the tops of the fish scale round pool unit templates 78, the fish scale round pool template system is fixed by penetrating through the top ear plates 77 of the installed fish scale round pool template system through transverse pull rods 79, and then the fish scale round pool template system is locked by fastening screws 84.
As shown in fig. 14, the concrete pouring template system of the reinforced weir is a single-side formwork system, and the template is fixed on the fine stone concrete 7 by using the ground anchor pull rod 33 and the back pull steel bar 87, so that the template is used for the riprapping and pouring construction of the large-volume concrete 72 of the newly poured weir first section 8, the newly poured weir second section 10 and the newly poured weir third section 11; one end of a rear pull steel bar 87 is fixed on the ground anchor pull rod 33, the other end of the rear pull steel bar penetrates through the side frame supporting die 86 and is connected with the double-spliced steel pipe 85 through a fixing piece, and the double-spliced steel pipe 85 is uniformly distributed behind the side frame supporting die 86, so that the overall stability of the side frame supporting die 86 is guaranteed.
Claims (10)
1. A construction method of a reinforced structure of a rock-fill concrete barrage is characterized by comprising the following steps:
1) construction preparation;
2) and (3) chiseling construction of the old weir body surface: chiseling an old weir slope chiseling section (5), an old weir bottom chiseling section (6) and an old weir top chiseling section (12) before pouring a new weir;
3) installing a top bar planting construction safety protection platform: drilling a hole in the side face of the top of the original rock concrete weir body (1), placing a top bar planting construction safety protection platform (51) in place, embedding an inner side fixing plate (53) at the top of the original rock concrete weir body (1), calibrating the position of a top veneering protection steel plate (50), then penetrating an old weir body side fixing screw (16) through a reserved hole of an outer side vertical fixing plate (49) and the hole in the side face of the top of the original rock concrete weir body (1), and then realizing fixed locking by using a fixing nut (17);
4) and (3) carrying out reinforcement planting construction on the top of the stone concrete: the drilling equipment aims at the protective steel plate preformed hole (54) of the top veneering protective steel plate (50) to drill, and then the bar planting construction of the weir body top surface anchor bar (3) is carried out;
5) installing a top hanging type operation platform: firstly, removing a top bar planting construction safety protection platform (51), then installing a suspension platform (24) in place, and then fixing an L-shaped dam crest anchor ear support (18) at the top of an original rock concrete weir body (1); a hanging type operating platform (35) is arranged below the hanging platform (24);
6) installing a block stone concrete bar planting and finalizing support: firstly, placing the bar planting drilling and shaping support (39) in place, and simultaneously carrying out traction connection and pressing fixation on the bar planting drilling and shaping support (39);
7) carrying out reinforcement planting construction on the slope surface of the stone concrete;
8) and (3) carrying out steel bar planting construction on the bottom surface of the stone concrete: drilling the bottom surfaces of the original rock concrete weir body (1) of the newly poured weir body section (8), the newly poured weir body section (10) and the newly poured weir body section (11) by using drilling equipment, and then performing bar planting construction of bottom anchor bars (9);
9) constructing a fixed side mold support of the ground anchor pull rod: drilling a hole on the bottom surface of an original rock concrete weir body (1), then inserting a ground anchor pull rod (33), pouring fine rock concrete (7), installing a side frame formwork (86) in place, and connecting the side frame formwork (86) and the ground anchor pull rod (33) through a back pull steel bar (87);
10) carrying out large-volume concrete riprap construction;
11) installing an inverted T-shaped quick drainage system: a bleeding water suction pump (69) is arranged on the rock surface near the top of the supporting structure (68), and an inverted T-shaped quick drainage conduit (71) is arranged;
12) pouring a new weir body in sections: placing a bottom plate steel reinforcement framework (73), then respectively pouring a newly poured weir body section (8), a newly poured weir body section (10) and a newly poured weir body section (11), and simultaneously utilizing a water bleeding water suction pump (69) to be matched with an inverted T-shaped quick drainage guide pipe (71) to carry out floating slurry bleeding treatment on the large-volume concrete (72);
13) building a fish scale round pool template system: sequentially erecting a fish scale round pool template system on the top surfaces of the newly-poured weir body first section (8), the newly-poured weir body second section (10) and the newly-poured weir body third section (11);
14) pouring a stilling pool: placing and fixing a stilling pool reinforcement cage (80) between the scale round pool unit templates (78), pouring to form a semicircular stilling pool (75), then installing a template of a stilling pool straight line section (76) at the bottom of the semicircular stilling pool (75), and pouring the pool wall of the stilling pool straight line section (76);
15) installing a weir dam top arc section moulding support system: when a section (8) of a newly-poured weir body is poured, arranging an embedded anchor bar (66) at the top of the section (8) of the newly-poured weir body, fixing a slide rail fixing plate (67) at the top of the section (8) of the newly-poured weir body through the embedded anchor bar (66), placing a balance weight sliding trolley (64) in place, placing a vertical slide rod (63) of a shaping support at the top arc section of the weir dam in a slide rail groove (60), adjusting the position of a sliding scraper (58), and then connecting a tensioning steel wire rope (62) at the bottom of a transverse connecting rod (59) with the balance weight sliding trolley (64);
16) pouring and strickling the arc section of the weir dam for shaping construction: installing a template of the new weir body top arc section (4), pouring the new weir body top arc section (4) dam body, then strickling and shaping the new weir body top arc section (4) dam body surface by using a sliding type scraper blade (58), and simultaneously pushing a balance weight sliding trolley (64) to realize strickling construction of the new weir body top arc section (4) dam body surface at different positions.
2. The method of constructing a reinforced structure of a masonry concrete barrage as claimed in claim 1, wherein: in the step 1), the construction preparation is as follows: manufacturing a weir body slope surface anchor bar (2), a weir body top surface anchor bar (3), a bottom anchor bar (9) and a bottom plate steel reinforcement framework (73), customizing a veneer protection compression steel plate (14), a top veneer protection steel plate (50), a fish scale round pool unit template (78) and a side frame formwork (86), determining the model of a bleeding water suction pump (69), and manufacturing a shaped alloy tuck net for riprap.
3. The method of constructing a reinforced structure of a masonry concrete barrage as claimed in claim 1, wherein: in the step 5), the end part of the hoop support (18) at the top of the L-shaped dam is connected with a suspension platform (24); the old weir body side fixing screw (16) penetrates through a preformed hole in the side face of an L-shaped dam crest anchor ear support (18) and a hole drilled in the side face of the top of an original stone concrete weir body (1), a top fixing piece (20) penetrates through the preformed hole in the top of the L-shaped dam crest anchor ear support (18) and the hole drilled in the top of the original stone concrete weir body (1), then the old weir body side fixing screw (16) is locked by a fixing nut (17), and the top fixing piece (20) is locked by a nut (19).
4. The method of constructing a reinforced structure of a masonry concrete barrage as claimed in claim 1, wherein: and 6), connecting the traction steel wire rope (29) with a pull ring (15) of a veneer protection compression steel plate (14) at the bottom of the steel bar planting drilling and shaping support (39), and then respectively pressing and fixing the inclined compression bar (37) and the transverse compression bar (42) on the top surface and the bottom of the side surface of the steel bar planting drilling and shaping support (39).
5. The method of constructing a reinforced structure of a masonry concrete barrage as claimed in claim 1, wherein: in the step 7), the construction of the reinforcing bars on the slope surface of the block stone concrete is as follows: drilling and bar planting construction is carried out on the weir body slope anchor bars (2) according to a mode from bottom to top, a constructor stands in a hanging type operation platform (35), and drilling equipment is adopted to align with a preformed hole of a facing protection compression steel plate (14) at the bottom of a bar planting drilling and sizing support (39) to drill holes on the weir body slope anchor bars (2); after one layer of construction is finished, a traction winch (21) of the hanging platform pulls the hanging type operating platform (35) to slide up, a traction winch (22) of the drilling and shaping support synchronously pulls a veneering protection pressing steel plate (14) at the bottom of the steel bar planting drilling and shaping support (39) to slide up, and then the next layer of construction for planting steel bars in the drilled holes is carried out.
6. The method of constructing a reinforced structure of a masonry concrete barrage as claimed in claim 1, wherein: in the step 9), a plurality of rows of double-spliced steel pipes (85) are adopted to stabilize the side frame supporting formwork (86), one end of a back-pull steel bar (87) is fixed on the plurality of rows of double-spliced steel pipes (85), and the other end of the back-pull steel bar is fixed on the ground anchor pull rod (33).
7. The method of constructing a reinforced structure of a masonry concrete barrage as claimed in claim 1, wherein: in the step 10), a shaped alloy net bag is adopted to fix the riprap of the mass concrete (72), and then a crane is used for matching with a hoisting steel wire rope to transport the shaped riprap to a specified position.
8. The method of constructing a reinforced structure of a masonry concrete barrage as claimed in claim 1, wherein: and step 11), constructing a drainage ditch (70), installing one end of an inverted T-shaped quick drainage guide pipe (71) at a pump port of a bleeding water suction pump (69), and placing the top surface of mass concrete (72) to be poured at the other end.
9. The method of constructing a reinforced structure of a masonry concrete barrage as claimed in claim 1, wherein: in the step 13), the two fish scale round pool unit templates (78) are spliced into a whole fish scale round pool template system at the splicing ear plates (82), then the fixing is realized by adopting the fixing pieces (81) and the fixing pins (83), then the top ear plates (77) of the fish scale round pool unit templates (78) are oppositely pulled, and the fastening is realized by the transverse pull rods (79) and the fastening screws (84).
10. The utility model provides a rock-block concrete weir dam reinforced structure which characterized in that: the method as claimed in any one of claims 1 to 9.
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| JP2006207317A (en) * | 2005-01-31 | 2006-08-10 | Infuratetsuku Kk | Construction method of concrete structure |
| 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 |
| CN109339067A (en) * | 2018-11-20 | 2019-02-15 | 杭州江润科技有限公司 | Concrete dam mask increases structure and construction method |
| JP2020012281A (en) * | 2018-07-17 | 2020-01-23 | 公益財団法人鉄道総合技術研究所 | Reinforcement banking construction and construction method of reinforcement banking |
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2021
- 2021-12-31 CN CN202111682485.3A patent/CN114481968B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006207317A (en) * | 2005-01-31 | 2006-08-10 | Infuratetsuku Kk | Construction method of concrete structure |
| 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 |
| JP2020012281A (en) * | 2018-07-17 | 2020-01-23 | 公益財団法人鉄道総合技術研究所 | Reinforcement banking construction and construction method of reinforcement banking |
| CN109339067A (en) * | 2018-11-20 | 2019-02-15 | 杭州江润科技有限公司 | Concrete dam mask increases structure and construction method |
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