CN114753315A - Construction method for replacing reinforcing steel bars with glass fiber reinforcements for dam panels - Google Patents
Construction method for replacing reinforcing steel bars with glass fiber reinforcements for dam panels Download PDFInfo
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- CN114753315A CN114753315A CN202210407590.4A CN202210407590A CN114753315A CN 114753315 A CN114753315 A CN 114753315A CN 202210407590 A CN202210407590 A CN 202210407590A CN 114753315 A CN114753315 A CN 114753315A
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- reinforcing steel
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- 239000003365 glass fiber Substances 0.000 title claims abstract description 159
- 229910001294 Reinforcing steel Inorganic materials 0.000 title claims abstract description 41
- 238000010276 construction Methods 0.000 title claims abstract description 28
- 230000002787 reinforcement Effects 0.000 title claims description 40
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 73
- 239000010959 steel Substances 0.000 claims abstract description 73
- 238000009434 installation Methods 0.000 claims abstract description 14
- 238000003860 storage Methods 0.000 claims abstract description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 36
- 239000000835 fiber Substances 0.000 claims description 32
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 25
- 210000003205 muscle Anatomy 0.000 claims description 25
- 229910052742 iron Inorganic materials 0.000 claims description 15
- 239000011152 fibreglass Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000003153 chemical reaction reagent Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 abstract description 42
- 239000002344 surface layer Substances 0.000 abstract description 14
- 230000032258 transport Effects 0.000 abstract 2
- 230000000295 complement effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
- E04C5/073—Discrete reinforcing elements, e.g. fibres
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
-
- 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
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention relates to a construction method for replacing reinforcing steel bars with glass fiber bars for dam panels, which solves the problems of slow installation speed, poor crack resistance and high cost of the conventional hot-rolled ribbed reinforcing steel bars for the dam panels of a reservoir, horizontally transports the glass fiber bars to a temporary storage yard of the reinforcing steel bars at the top of a dam by using a truck crane, and transports the reinforcing steel bars to a binding part by using a 5T hoist. The steel bar inserting device is erected on a slope surface, and two layers of phi 22mm (diameter) 1 st and 2 nd horizontal sample frame steel bars are welded on the steel bar inserting device, the 1 st bottom layer glass fiber bar is connected with the 2 nd horizontal sample frame steel bar through a binding wire, the longitudinal 1 st bottom layer glass fiber bar is connected with the transverse 2 nd bottom layer glass fiber bar through a binding wire, the 1 st and 2 nd bottom layer glass fiber bar are bound and connected after being bound and finished, the 2 nd surface layer glass fiber bar is bound and connected with the upper 1 st horizontal sample frame steel bar, the upper part of the longitudinal 2 nd surface layer glass fiber bar is bound and connected with the 1 st surface layer glass fiber bar.
Description
Technical Field
The glass fiber reinforcement is mainly used for dam panels of hydroelectric and hydraulic engineering in place of reinforcing steel bar construction, and can be used for dam panel construction to replace reinforcing steel bar installation.
Background
The traditional reservoir dam panel adopts common hot-rolled ribbed steel bars, and the traditional steel bars have large mass, slow installation progress, more required manpower and poor panel crack resistance.
Disclosure of Invention
The invention aims to provide a dam panel construction method which is easy to install on site, improves the crack resistance of the panel, is low in cost and uses less human resources and adopts glass fiber reinforced plastics to replace steel bars.
The purpose of the invention is realized by the following steps:
the dam panel adopts a construction method of replacing reinforcing steel bars with glass fiber reinforcing bars, a truck-mounted crane is utilized to horizontally transport the glass fiber reinforcing bars to a dam crest reinforcing bar temporary storage yard for stacking, a winch is adopted to pull a reinforcing bar trolley to transport the reinforcing bar trolley to a binding position, reinforcing bars 1 vertical to the slope surface are erected on the slope surface, the reinforcing bars 1 form a network consisting of longitudinal and transverse lines with the same interval on the slope surface, the reinforcing bars 1 are positioned at four corners of a 2 x 2m grid, the reinforcing bars 1 penetrate slope-fixing mortar to enter a bedding material for 35-45cm, upper and lower layers of 1 and 2 horizontal sample frame reinforcing bars 3 and 2 are welded on the reinforcing bars 1, the 1 and 2 horizontal sample frame reinforcing bars 3 and 2 are positioned in the transverse direction of the slope surface, the outer leakage part of the reinforcing bars 1 is flush with the surface of the upper layer 1 horizontal sample frame reinforcing bar 3, the 1 and 2 glass fiber reinforcing bars 4 and 5 are bound, the 1, 2 bottom layer glass fiber reinforcing bars 4 and 5 are respectively positioned in the longitudinal direction and the transverse direction of the slope surface, firstly binding a 1 st bottom glass fiber rib 4, connecting the 1 st bottom glass fiber rib 4 with a 2 nd horizontal sample frame reinforcing steel bar 2 through a binding wire, binding the 1 st bottom glass fiber rib 4 with the 2 nd bottom glass fiber rib 5 through the binding wire after the 1 st bottom glass fiber rib 4 is bound, binding the intersecting points of the 1 st bottom glass fiber rib 4 and the 2 nd bottom glass fiber rib 5 by the binding wire, binding the intersecting points of the 1 st bottom glass fiber rib and the 2 nd bottom glass fiber rib close to two rows of the 1 st bottom glass fiber rib and the 2 nd bottom glass fiber rib close to the periphery of the network point by point, binding the intersecting points of the 1 st bottom glass fiber rib and the 2 nd bottom glass fiber rib at the rest parts of the network according to 50 percent of the intersecting points, binding the 1 st bottom glass fiber rib and the 2 nd bottom glass fiber rib 4 and the 5, then carrying out the construction of the 1 st glass fiber rib and the 2 nd bottom glass fiber rib 6 and 7, respectively arranging the 1 st glass fiber rib and the 2 nd bottom glass fiber rib 6 and the 7 transversely and longitudinally, binding the 2 nd bottom glass fiber rib 7 with the upper layer 1 st horizontal sample frame reinforcing steel bar 3, and the 2 nd longitudinal surface layer glass fiber rib 7 is subjected to binding of the 1 st transverse surface layer glass fiber rib 6 after installation, and the 2 nd surface layer glass fiber rib 7 is bound and connected with the 1 st surface layer glass fiber rib 6.
The 1 st, 2 bottom glass fiber muscle 4, 5 and 1 st, 2 surface course glass fiber muscle 6, 7 constitute by a plurality of glass fiber overlap joints, and two adjacent glass fiber overlap joints length must not be less than 40 centimetres, ties the silk and adopts 12 # iron wires.
Slope surface inserted steel bar 1 is welded with the 1 st and 2 nd horizontal sample frame steel bars after finishing.
The glass fiber manufacturing lengths are different, and the 1 st and 2 nd bottom layer glass fiber ribs 4 and 5 and the 1 st and 2 nd surface layer glass fiber ribs 6 and 7 are ensured to be bound and connected on the same section.
The dam panel construction method adopting glass fiber reinforcement to replace steel bars comprises the following steps:
manufacturing and transporting glass fiber reinforced plastic bars
The surface of the fiber ribs should be clean, the stains on the surface should be removed before use, and if the surface of the material is polluted by some substances or reagents, the material can be wiped clean by using a solvent. The glass fiber ribs are brittle materials, and must be prevented from being thrown and collided during loading, unloading and transportation; and transverse support rods are adopted for hoisting and transportation, so that bending and breakage caused by overweight materials are avoided. All the glass fiber reinforcements are required to be numbered, 18T truck-mounted cranes are used for horizontally transporting the glass fiber reinforcements to a temporary dam top reinforcement storage yard for stacking, a 25T crane is used for placing the processed and formed fiber reinforcements on a slope reinforcement trolley according to the numbers, a 5T winch is used for pulling the reinforcement trolley, 1T of fiber reinforcements are conveyed to an installation working surface each time, the fiber reinforcements are manually installed on site,
Do a wall and lay domatic inserting reinforcing bar
The total station is adopted for measuring and lofting, the grid lines are arranged by piling, the inserted steel bars are deformed steel bars with the diameter of 25mm, the spacing is 2 multiplied by 2m, the inserted steel bars are manually driven into the bedding material by an iron hammer for 40cm, personnel use the ladder stand to go up and down and bind the safety ropes, the leaking parts of the inserted steel bars are flush with the surface of the steel bars of the upper horizontal sample frame, the design positions of the steel bars 2 and 3 of the 1 st and 2 nd sample frames are marked on the inserted steel bars by measuring,
mounting the sample frame steel bars
After the slope inserted steel bars are laid, sample frame steel bars are immediately installed, the sample frame steel bars are round steel with the diameter of 22mm, an upper layer and a lower layer are arranged, the 1 st sample frame steel bars and the 2 nd sample frame steel bars are horizontally arranged, the distance is 2.0m, the 1 st sample frame steel bars and the 2 nd sample frame steel bars are manually welded at the positions marked by the inserted steel bars 1 by using an electric welding machine, the outer leakage parts of the inserted steel bars are flush with the surfaces of the upper layer horizontal sample frame steel bars,
fourth 1 st and 2 nd bottom layer glass fiber ribs 4 and 5 are installed
After the construction of the sample frame ribs is finished, bottom layer fiber rib installation is carried out, the binding of the 1 st bottom layer glass fiber rib 4 is firstly carried out, the 1 st bottom layer glass fiber rib 4 is bound and connected with the 2 nd horizontal sample frame reinforcing steel bar 2 by using a 12# iron wire, the connecting position meets the requirement of a design drawing, the binding of the 2 nd bottom layer glass fiber rib 5 is started after the binding of the 1 st bottom layer glass fiber rib 4 is finished, the 1 st and 2 nd bottom layer glass fiber ribs 4 and 5 are bound by using a 12# iron wire, the intersection points of two lines of the 1 st and 2 nd bottom layer glass fiber ribs 4 and 5 close to the periphery are firmly bound point by point, the intersection points of the rest 1 st and 2 nd bottom layer glass fiber ribs 4 and 5 are bound according to 50 percent of intersection points,
Binding of face layer glass fiber ribs
1, 2 bottom glass fiber muscle 4, 5 ligatures are accomplished the back, carry out the 1 st, 2 surface course fibre muscle 6, 7 construction, vertical 2 nd surface course fibre muscle 7 carries out the ligature with upper 2 nd level appearance frame reinforcing bar 3 and is connected, the installation of 2 nd surface course fibre muscle 7 is accomplished the back and is carried out the 6 ligatures of horizontal 1 st surface course fibre muscle in upper portion again, the 1 st, 2 surface course fibre muscle adopts the ligature of pricking the silk, go up the fibre muscle and all adopt the overlap joint, overlap joint length must not be less than 40 centimetres, it adopts No. 12 iron wires to prick the silk.
The invention has the advantages that:
the construction method of the material increases the anti-cracking performance of the concrete on the premise of ensuring that the strength of the reinforcing steel bar is not changed, improves the construction timeliness compared with the traditional material, and saves the cost.
The glass fiber rib has high tensile strength, light weight, strong corrosion resistance and strong material binding force, and effectively reduces the crack generation of the panel. The glass fiber reinforcement replaces the steel bar, which is a new material technology and can be complementary with the steel bar.
The glass fiber reinforced plastic new material is adopted for construction, so that the labor can be effectively saved, and a large amount of time is saved for subsequent construction.
Drawings
FIG. 1 is a schematic view of a large panel.
Fig. 2 is a sectional view of fig. 1.
FIG. 3 is a plan view of the glass fiber ribs of the surface layer and the bottom layer.
The specific implementation mode is as follows:
wendeng pumped storage power station participated in each building party and proposed the idea of applying the glass fiber reinforced material to the field of water and electricity. Considering the performance index of the material, the self stress characteristic of the structure, the influence on later-stage maintenance and the like, and under the condition of relatively complete technical support data, the construction application of replacing the reinforcing steel bars with the glass fiber reinforced bars is developed for improving the crack resistance of the panel concrete. The glass fiber reinforcement is light in weight, convenient and efficient to construct, the input cost is lower than that of the used reinforcing steel bars, and the crack resistance of the concrete is improved.
The dam panel adopts a construction method of replacing reinforcing steel bars with glass fiber reinforcing bars, a truck-mounted crane is utilized to horizontally transport the glass fiber reinforcing bars to a dam crest reinforcing bar temporary storage yard for stacking, a winch is adopted to pull a reinforcing bar trolley to transport the reinforcing bar trolley to a binding position, reinforcing bars 1 vertical to the slope surface are erected on the slope surface, the reinforcing bars 1 form a network consisting of longitudinal and transverse lines with the same interval on the slope surface, the reinforcing bars 1 are positioned at four corners of a 2 x 2m grid, the reinforcing bars 1 penetrate slope-fixing mortar to enter a bedding material by 40cm, upper and lower two layers of phi 22mm, 1 st and 2 nd horizontal sample frame reinforcing bars 3 and 2 are welded on the reinforcing bars 1, the outer leakage parts of the reinforcing bars 1 are flush with the surface of the upper layer 1 st horizontal sample frame reinforcing bars 3, the binding of the 1 st and 2 nd glass fiber reinforcing bars 4 and 5 is started, the 1 st and 2 nd bottom layer glass fiber reinforcing bars 4 and 5 are respectively positioned in the longitudinal direction and the horizontal direction of the slope surface, firstly binding a 1 st bottom glass fiber rib 4, connecting the 1 st bottom glass fiber rib 4 with a 2 nd horizontal sample frame reinforcing steel bar 2 through a binding wire, binding the 1 st bottom glass fiber rib 4 with the 2 nd bottom glass fiber rib 5 through the binding wire after the 1 st bottom glass fiber rib 4 is bound, binding the intersecting points of the 1 st bottom glass fiber rib 4 and the 2 nd bottom glass fiber rib 5 by the binding wire, binding the intersecting points of the 1 st bottom glass fiber rib and the 2 nd bottom glass fiber rib close to two rows of the 1 st bottom glass fiber rib and the 2 nd bottom glass fiber rib close to the periphery of the network point by point, binding the intersecting points of the 1 st bottom glass fiber rib and the 2 nd bottom glass fiber rib at the rest parts of the network according to 50 percent of the intersecting points, binding the 1 st bottom glass fiber rib and the 2 nd bottom glass fiber rib 4 and the 5, then carrying out the construction of the 1 st glass fiber rib and the 2 nd bottom glass fiber rib 6 and 7, respectively arranging the 1 st glass fiber rib and the 2 nd bottom glass fiber rib 6 and the 7 transversely and longitudinally, binding the 2 nd bottom glass fiber rib 7 with the upper layer 1 st horizontal sample frame reinforcing steel bar 3, and the 2 nd longitudinal surface layer glass fiber rib 7 is subjected to binding of the 1 st transverse surface layer glass fiber rib 6 after installation, and the 2 nd surface layer glass fiber rib 7 is bound and connected with the 1 st surface layer glass fiber rib 6.
The 1 st, 2 bottom glass fiber muscle 4, 5 and 1 st, 2 surface course glass fiber muscle 6, 7 constitute by a plurality of glass fiber overlap joints, and two adjacent glass fiber overlap joints length must not be less than 40 centimetres, ties the silk and adopts 12 # iron wires.
Slope surface insertion steel bars 1 are welded with the 1 st and 2 nd horizontal sample frame steel bars after being completed.
The glass fiber manufacturing lengths are different, and the 1 st and 2 nd bottom layer glass fiber ribs 4 and 5 and the 1 st and 2 nd surface layer glass fiber ribs 6 and 7 are ensured to be bound and connected on the same section.
The construction method for replacing reinforcing steel bars with glass fiber reinforced plastics for the dam panel comprises the following steps:
making and transporting glass fiber rib
The surface of the fiber ribs should be clean, the stains on the surface should be removed before use, and if the surface of the material is polluted by certain substances or reagents, the material can be wiped clean by using a solvent. The glass fiber rib is a brittle material, and must be prevented from throwing and colliding during loading, unloading and transportation; and the transverse support rods are adopted for hoisting and transportation, so that the material is prevented from being too heavy, bent and damaged. All the glass fiber reinforcements are required to be numbered, 18T truck-mounted cranes are used for horizontally transporting the glass fiber reinforcements to a temporary dam top reinforcement storage yard for stacking, a 25T crane is used for placing the processed and formed fiber reinforcements on a slope reinforcement trolley according to the numbers, a 5T winch is used for pulling the reinforcement trolley, 1T of fiber reinforcements are conveyed to an installation working surface each time, the fiber reinforcements are manually installed on site,
Do a wall and lay domatic inserting reinforcing bar
The total station is adopted for measuring and lofting, the grid lines are arranged by piling, the inserted steel bars are deformed steel bars with the diameter of 25mm, the spacing is 2 multiplied by 2m, the inserted steel bars are manually driven into the bedding material by an iron hammer for 40cm, personnel use the ladder stand to go up and down and bind the safety ropes, the leaking parts of the inserted steel bars are flush with the surface of the steel bars of the upper horizontal sample frame, the design positions of the steel bars 2 and 3 of the 1 st and 2 nd sample frames are marked on the inserted steel bars by measuring,
mounting the sample frame steel bars
After the slope inserted steel bars are laid, sample frame steel bars are immediately installed, the sample frame steel bars are round steel with the diameter of 22mm, an upper layer and a lower layer are arranged, the 1 st sample frame steel bars and the 2 nd sample frame steel bars are horizontally arranged, the distance is 2.0m, the 1 st sample frame steel bars and the 2 nd sample frame steel bars are manually welded at the positions marked by the inserted steel bars 1 by using an electric welding machine, the outer leakage parts of the inserted steel bars are flush with the surfaces of the upper layer horizontal sample frame steel bars,
fourth 1 st and 2 nd base layer glass fiber ribs 4 and 5 are installed
After the construction of the sample frame ribs is finished, bottom layer fiber rib installation is carried out, the binding of the 1 st bottom layer glass fiber rib 4 is firstly carried out, the 1 st bottom layer glass fiber rib 4 is bound and connected with the 2 nd horizontal sample frame reinforcing steel bar 2 by using a 12# iron wire, the connecting position meets the requirement of a design drawing, the binding of the 2 nd bottom layer glass fiber rib 5 is started after the binding of the 1 st bottom layer glass fiber rib 4 is finished, the 1 st and 2 nd bottom layer glass fiber ribs 4 and 5 are bound by using a 12# iron wire, the intersection points of two lines of the 1 st and 2 nd bottom layer glass fiber ribs 4 and 5 close to the periphery are firmly bound point by point, the intersection points of the rest 1 st and 2 nd bottom layer glass fiber ribs 4 and 5 are bound according to 50 percent of intersection points,
Binding of face layer glass fiber ribs
1, 2 bottom glass fiber muscle 4, 5 ligatures are accomplished the back, carry out the 1 st, 2 surface course fibre muscle 6, 7 construction, vertical 2 nd surface course fibre muscle 7 carries out the ligature with upper 2 nd horizontal appearance frame reinforcing bar 3 and is connected, the installation of 2 nd surface course fibre muscle 7 is accomplished the back upper portion and is carried out the ligature of horizontal 1 st surface course fibre muscle 6 again, the 1 st, 2 surface course fibre muscle adopts the ligature of pricking the silk, it all adopts the overlap joint to go up the fibre muscle, overlap joint length must not be less than 40 centimetres, it adopts No. 12 iron wires to prick the silk.
Claims (5)
1. A construction method for replacing reinforcing steel bars with glass fiber reinforcing steel bars on a dam panel is characterized in that a truck-mounted crane is used for horizontally transporting the glass fiber reinforcing steel bars to a dam top reinforcing steel bar temporary storage yard for stacking, a winch is used for pulling reinforcing steel bar trolleys to a binding position, inserting reinforcing steel bars (1) vertical to a slope surface are erected on the slope surface, the inserting reinforcing steel bars form a network consisting of longitudinal and transverse lines with the same interval on the slope surface, the inserting reinforcing steel bars are positioned at four corners of a 2 x 2m grid, the inserting reinforcing steel bars penetrate slope-fixing mortar to enter bedding materials for 35-45cm, upper and lower layers of 1 and 2 horizontal sample frame reinforcing steel bars (3) and (2) are welded on the inserting reinforcing steel bars, the 1 and 2 horizontal sample frame reinforcing steel bars are positioned in the transverse direction of the slope surface, the outer leakage parts of the inserting reinforcing steel bars are flush with the surface of the 1 st horizontal sample frame reinforcing steel bar, the 1 nd 2 bottom layer glass fiber reinforcing steel bars (4) and (5) are respectively positioned in the longitudinal direction and the transverse direction of the slope surface, the bottom layer glass fiber reinforcing steel bars are firstly bound, the 1 st bottom glass fiber rib (4) is connected with the 2 nd horizontal sample frame reinforcing steel bar (2) through a binding wire, after the 1 st bottom glass fiber rib is bound, the longitudinal 1 st bottom glass fiber rib is connected with the transverse 2 nd bottom glass fiber rib through the binding wire, the intersecting position of the 1 st bottom glass fiber rib and the 2 nd bottom glass fiber rib is bound by the binding wire, the intersecting points of the two rows of the 1 st and 2 nd bottom glass fiber ribs near the periphery of the network are bound point by point, the intersecting points of the 1 st and 2 nd bottom glass fiber ribs at the other positions of the network are bound according to 50 percent of the intersecting points, after the 1 st and 2 nd bottom glass fiber ribs are bound, the 1 st and 2 nd surface glass fiber ribs (6) and (7) are constructed, the 1 st and 2 nd surface glass fiber ribs are respectively arranged transversely and longitudinally, the 2 nd surface glass fiber rib (7) is bound with the upper 1 st horizontal sample frame reinforcing steel bar (3), after the installation of the transverse 2-layer glass fiber ribs is finished, the upper part of the transverse 1 st-layer glass fiber rib (6) is bound, and the 2 nd-layer glass fiber rib and the 1 st-layer glass fiber rib are bound and connected.
2. The dam panel construction method of claim 1 using glass fiber reinforcement instead of steel reinforcement, wherein the first and second bottom glass fiber reinforcements and the first and second face glass fiber reinforcements are formed by overlapping a plurality of glass fibers, the overlapping length of two adjacent glass fibers is not less than 40 cm, and the binding wire is made of 12 # iron wire.
3. The dam panel construction method of claim 1 using glass fiber reinforcement instead of reinforcement, wherein the slope surface is welded to the 1 st and 2 nd horizontal sample frames after the insertion of reinforcement 1.
4. The dam panel construction method of claim 2 using glass fiber reinforcement instead of reinforcement, wherein the glass fiber is made in different lengths, ensuring that the 1 st and 2 nd bottom layer glass fiber reinforcement and the 1 st and 2 nd face layer glass fiber reinforcement binding joints are not on the same cross section.
5. The construction method for replacing reinforcing steel bars with glass fiber reinforced plastics for the dam panel comprises the following steps:
manufacturing and transporting glass fiber reinforced plastic bars
The surface of the fiber rib should be clean, surface stains should be removed before use, if the surface of the material is polluted by some substances or reagents, the material can be wiped clean by using a solvent, the glass fiber rib is a brittle material, and throwing and collision need to be avoided during loading, unloading and transportation; the transverse brace rods are adopted for hoisting and transporting, the bending and the breakage caused by overweight of materials are avoided, all the glass fiber reinforcements are required to be numbered, the vehicle-mounted crane is used for horizontally transporting the glass fiber reinforcements to a dam top reinforcement temporary storage yard for stacking, the crane is used for placing the processed and formed fiber reinforcements on a slope reinforcement trolley according to the numbers, the reinforcement trolley is pulled by a winch, the fiber reinforcements are conveyed to a mounting working face each time and are manually mounted on site,
Dome laying slope surface insertion steel bar
The total station is adopted for measuring and lofting, the grid lines are arranged by piling, the inserted steel bars are deformed steel bars with the diameter of 25mm, the spacing is 2 multiplied by 2m, the inserted steel bars are manually driven into the bedding material by an iron hammer for 40cm, personnel use the ladder stand to go up and down and bind the safety ropes, the leaking parts of the inserted steel bars are flush with the surface of the steel bars of the upper horizontal sample frame, the design positions of the steel bars of the 1 st and the 2 nd sample frames are marked on the inserted steel bars by measuring,
mounting the sample frame reinforcing steel bars
After the slope inserted steel bars are laid, sample frame steel bars are immediately installed, the sample frame steel bars are round steel with the diameter of 22mm, an upper layer and a lower layer are arranged, the 1 st sample frame steel bars and the 2 nd sample frame steel bars are horizontally arranged, the distance is 2.0m, the 1 st sample frame steel bars and the 2 nd sample frame steel bars (2) and (3) are manually welded at the positions marked by the inserted steel bars 1 by using an electric welding machine, the outer leakage parts of the inserted steel bars are flush with the surface of the upper layer horizontal sample frame steel bars,
the No. 1 and No. 2 bottom glass fiber ribs (4) and (5) are installed
After the construction of the sample frame ribs is finished, bottom layer fiber rib installation is carried out, the 1 st bottom layer glass fiber rib (4) is bound, the 1 st bottom layer glass fiber rib is bound and connected with the 2 nd horizontal sample frame reinforcing steel bar (2) by using a 12# iron wire, the connecting position meets the requirement of a design drawing, the 2 nd bottom layer glass fiber rib (5) is bound after the 1 st bottom layer glass fiber rib is bound, the 1 st and 2 nd bottom layer glass fibers are bound by using a 12# iron wire, the intersection points of two lines of the 1 st and 2 nd bottom layer glass fiber ribs close to the periphery are firmly bound point by point, the intersection points of the rest 1 st and 2 nd bottom layer glass fiber ribs are bound according to 50 percent of intersection points,
Binding of face layer glass fiber ribs
1, 2 back is accomplished in the ligature of bottom glass fiber muscle, carry out 1, 2 surface course fibre muscle (6), (7) construction, vertical 2 nd surface course fibre muscle carries out the ligature with upper 2 nd level appearance frame reinforcing bar (3) and is connected, 2 nd surface course fibre muscle installation is accomplished the back and is the upper portion again carry out horizontal 1 st surface course fibre muscle ligature, 1 st, 2 surface course fibre muscle adopts the ligature of bundling, above the fibre muscle all adopt the overlap joint, overlap joint length must not be less than 40 centimetres, bundle the silk and adopt No. 12 iron wires.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210407590.4A CN114753315B (en) | 2022-04-19 | 2022-04-19 | Construction method for replacing reinforcing steel bars with glass fiber reinforced plastic bars for dam panels |
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| CN202210407590.4A CN114753315B (en) | 2022-04-19 | 2022-04-19 | Construction method for replacing reinforcing steel bars with glass fiber reinforced plastic bars for dam panels |
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| CN114753315B CN114753315B (en) | 2024-04-26 |
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