CN112049413B - Precast concrete sill table and construction method thereof - Google Patents
Precast concrete sill table and construction method thereof Download PDFInfo
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- CN112049413B CN112049413B CN202011042363.3A CN202011042363A CN112049413B CN 112049413 B CN112049413 B CN 112049413B CN 202011042363 A CN202011042363 A CN 202011042363A CN 112049413 B CN112049413 B CN 112049413B
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- 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
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
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- 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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/001—Corner fastening or connecting means for forming or stiffening elements
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- 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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
- E04G17/065—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning
- E04G17/0655—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning the element consisting of several parts
- E04G17/0657—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning the element consisting of several parts fully recoverable
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- 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
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
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Abstract
The invention provides a precast concrete sill table and a construction method thereof, wherein the precast concrete sill table comprises a linear sill table block and a corner sill table block, the bottom surface of the sill table block is in a step shape or a groove shape, a U-shaped steel bar is arranged at the bottom of the sill table block, two end parts of the U-shaped steel bar are embedded in the sill table block, the bent part of the U-shaped steel bar protrudes out of the bottom surface of the sill table block, and the U-shaped steel bar is used as a hanging ring during transportation of the sill table block and is used as a supporting leg during connection of the sill table block and a floor slab. The invention combines the precast concrete sill table with grouting construction, and simultaneously the bottom surface of the sill table block is designed into a special step shape or a groove shape, so that the permeation path is increased. The construction method has the advantages of fast progress, simple operation and guaranteed construction quality.
Description
Technical Field
The invention relates to the technical field of construction of prefabricated concrete sills in toilets and kitchens, in particular to a prefabricated concrete sill and a construction method thereof.
Background
The concrete sill deck construction generally adopts secondary structure construction, and the concrete is cast simultaneously in the main concrete cast-in-place beam slab construction process, and secondary formwork pouring concrete is required. The method has the advantages of reducing the formwork supporting difficulty, having high construction speed, reducing the construction difficulty especially under the condition that the concrete strength of the ridge platform is inconsistent with the strength of the floor slab, and reducing the cost. The construction joint exists between the ridge platform and the floor slab, the interface treatment is not in place in the pouring process, the root of the return edge of the side opening (including the roof parapet) of the toilet, the kitchen and the roof is easy to leak or get damp in the later use process, and the later maintenance and repair of the project are greatly influenced. The method can be applied to cast-in-place structures and can also be applied to fabricated buildings.
The construction method commonly used at present also comprises the following steps: the concrete sill table and the main body beam slab are synchronously poured, the concrete sill table formwork is erected in a mode of hanging the formwork, and the concrete strength grade of the sill table is the same as that of the floor slab. The construction method has the advantages that the integrity of the cutting platform and the floor slab is improved, and the conditions of construction joints and water leakage at the construction joints do not exist. The method has the advantages that the construction difficulty is high by adopting the hanging die, the construction progress is slow, the requirement on the operation technical level of an operator is high, the positioning accuracy of the template is not well controlled, the stability of the hanging die template is difficult to control, the conditions of die expansion and die running are easy to occur in the concrete pouring process, because the height difference exists in the poured concrete, the concrete sill table part cannot be vibrated in the concrete pouring process, once the vibrated concrete collapses to the periphery, the control of the elevation of the floor slab is influenced, the elevation of the top of the floor slab near the sill table is increased, the condition of under-vibration exists in the sill table pouring process, the condition of leakage is easy to occur due to the fact that the concrete is not vibrated compactly, and the distribution of the leakage points is not well processed irregularly. The strength grade of the concrete sill platform can only be consistent with that of a floor slab, and if the strength grade is not consistent with that of the floor slab, the cost is increased. The above method is only applicable to cast-in-place structural construction.
At present, a method for prefabricating the concrete sill table also exists in the concrete sill table construction method, and the method is characterized in that the concrete sill table is prefabricated in sections according to the size, the reinforcing bars and the concrete strength grade required in a design construction drawing, then the concrete sill table is hoisted to be in place to a corresponding position before concrete is poured on a floor slab, then the floor slab concrete is poured, and the floor slab concrete is poured into a whole. And the positions of the construction joints of the prefabricated sill section are bonded by concrete pouring.
The method has the advantages that the horizontal construction joint at the position of the prefabricated sill and the floor slab has stronger impermeability and lower leakage rate than the horizontal construction joint of the first secondary structure construction method; the compactness of concrete of the sill table body is stronger by adopting a prefabricating method for industrially manufacturing the sill table, the leakage condition caused by the incompact concrete is reduced, the prefabricating method omits a mould hanging construction step, the construction difficulty is reduced, the construction progress is accelerated, and the sill table positioning is easier to operate. The method has the disadvantages that a plurality of longitudinal construction joints are added for the sectional installation of the prefabricated part, leakage points are increased, and once the construction joints are not well treated, the leakage is easy to occur, so that the integrity of the method is weaker than that of the former two methods. In addition, concrete pouring bonding is adopted to enable the compactness of the construction joint to be poor, the possibility of leakage is increased, and the subsection prefabricated sill table is generally linear, so that the difficulty in treating the construction joint at the corner of the sill table is high, and the leakage is easy to occur. In conclusion, how to deal with the leakage condition of each construction joint when the prefabricated sill construction is carried out is an urgent problem to be solved, and the construction quality is ensured.
Disclosure of Invention
The invention aims to provide a precast concrete sill and a construction method thereof, and aims to solve the problems that a construction joint is easy to leak and the construction process is complex in the existing sill and construction method.
The technical scheme adopted by the invention is as follows: a precast concrete sill table comprises a linear sill table block and a corner sill table block, wherein the bottom surface of the sill table block is in a step shape or a groove shape, a U-shaped steel bar is arranged at the bottom of the sill table block, two end parts of the U-shaped steel bar are embedded in the sill table block, the bending part of the U-shaped steel bar protrudes out of the bottom surface of the sill table block, and the U-shaped steel bar is used as a lifting ring during transportation of the sill table block and used as a supporting leg during connection of the sill table block and a floor slab; the height of the sill block is 120-170 mm.
The length of linear type sill block is 1000 ~ 1200mm, and the both sides length of corner type sill block is 500~600 mm.
The height of the bent part of the U-shaped steel bar protruding out of the lowest bottom surface of the sill block is 30 mm.
The width of the notch of the groove-shaped bottom surface of the ridge block is 30mm, and the depth of the notch is 30 mm.
Every bank platform piece sets up two U-shaped reinforcing bars at least, and two U-shaped reinforcing bars symmetry are located apart from bank platform piece tip 250mm department.
The bending part of the U-shaped steel bar is a horizontal hook.
A construction method of a precast concrete sill table comprises the following steps:
a. prefabricating the concrete sill table, and meanwhile, arranging a sill table template assembly; the ridge platform template component comprises a horizontal seam template, a longitudinal seam template, a counter-pull screw rod, a 3-type fastener and a frame pipe, wherein the horizontal seam template and the longitudinal seam template are both of channel steel structures, and the horizontal seam template comprises a straight template corresponding to a linear ridge platform block and an angle template corresponding to a corner type ridge platform block;
b. positioning and paying off are carried out according to the installation position of the ridge platform, two side lines of the ridge platform and positioning lines at two ends of the ridge platform are required to be paid out, and the floor slab at the installation position is cleaned and chiseled into a rough surface;
c. one surface of each sill block with the U-shaped steel bars faces downwards and is supported on a floor slab, and all sill blocks are placed in position according to the design positions of the sill blocks;
d. installing horizontal seam templates on two sides of the ridge table, connecting the bottom surfaces of the horizontal seam templates with the floor slab by using rubber mats, arranging bolt holes in the positions, corresponding to longitudinal seams of the ridge table, of the horizontal seam templates, penetrating counter-pulling screws into the bolt holes, sequentially penetrating the end parts, penetrating out of the horizontal seam templates on the two sides of the ridge table, of the counter-pulling screws through type 3 fasteners and nuts, and pressing the frame pipes between the type 3 fasteners and the horizontal seam templates;
e. installing longitudinal seam templates at the positions corresponding to the longitudinal seams of the ridge platform, and welding the bottom surfaces of the longitudinal seam templates with the top surfaces of the horizontal seam templates;
f. grouting the horizontal seam and the longitudinal seam of the ridge platform by using a grouting pipe; and (5) maintaining after grouting is finished, and dismantling the sill formwork assembly after the sill construction meets the requirements.
The split screw comprises a middle rod and end rods in threaded connection with the two ends of the middle rod, the length of the middle rod is equal to or slightly smaller than the width of the ridge platform, and the middle rod is reserved in the ridge platform after the ridge platform is constructed.
The method comprises the steps that a hose with the diameter smaller than that of a horizontal joint is adopted as a grouting pipe, the length of the grouting pipe is the sum of the operation length, the longitudinal joint height and the exposure height plus the length of a prefabricated sill table, the grouting pipe needs to be wetted before grouting, the grouting pipe extends downwards from the longitudinal joint until the grouting pipe reaches the horizontal joint at the lower part of the prefabricated sill table, a gravity grouting method is adopted, a grouting funnel is arranged at the end part of the grouting pipe, grouting materials are poured into the grouting funnel, then the horizontal joint is injected through the grouting pipe, the grouting pipe enters the longitudinal joint under the action of pressure until the longitudinal joint is full, the grouting pipe is drawn out while grouting in the grouting process so as to guarantee the grouting fullness, and grouting is started from one end of the sill table for one time.
The grouting material used for grouting needs strength reaching C30 grade.
The invention has the following advantages:
(1) adopt precast concrete bank platform batch production processing, the management is standard, operation standardization, flow, and the technical merit of construction is high, and the quality assurance degree is high, and prefabricated component's high quality, pre-buried U-shaped reinforcing bar can be as rings when bank platform piece transports, as the supporting legs when bank platform piece is connected with the floor, and it is more convenient to use.
(2) The bottom surface of the precast concrete sill table (namely the position of a horizontal seam connected with a floor slab) is made into a groove shape or a step shape, so that the permeation path is increased, the impermeability is improved, the service function is more reliable, the maintenance caused by the water seepage of the horizontal seam of the sill table is reduced, and the service life of the project is prolonged.
(3) When the concrete bank platform is prefabricated, the direct prefabrication of corner is corner type bank platform piece, and when having avoided the construction of linear type bank platform piece, the template was erect the degree of difficulty and is big, and the problem that corner slip casting quality is difficult to guarantee has significantly reduced the whole condition of seeping water of bank platform.
(4) The hot-rolled channel steel is adopted as a grouting template, the surface of the profile steel is flat, smooth and not easy to be stained with slurry, and the impression effect after the template is removed is good; the section steel rigidity intensity is big, and non-deformable can increase and consolidate the interval to the screw rod of drawing, saves the manual work under the prerequisite of guaranteeing the quality, connects the reinforcement of inboard template and becomes whole, makes the template stable not shift indeformable. And the section steel template can be used repeatedly, so that the cost is saved.
(5) Compared with the existing concrete pouring mode, the grouting material is adopted for grouting, the grouting material has high strength, high compactness and no shrinkage, and the tightness and impermeability of construction joints can be ensured; the grouting material has strong fluidity and simple grouting process, can flow and fill horizontal construction joints and longitudinal joints by adopting gravity grouting, has no honeycomb pitted surface and has high speed. The grouting material strength is increased quickly, the template dismantling time is shortened, and the template turnover rate is improved.
In conclusion, the precast concrete ridge platform is combined with grouting construction, and meanwhile, the bottom surface of the ridge platform block is designed to be in a special step shape or a groove shape, so that a permeation path is increased. The construction method has the advantages of fast progress, simple operation and guaranteed construction quality.
Drawings
Fig. 1 is a schematic structural view of a precast concrete sill of the present invention.
Fig. 2 is a schematic sectional view illustrating a combination of a precast concrete sill and a form assembly according to the present invention.
Fig. 3 is a side view of fig. 2.
Fig. 4 is a schematic plan view of the sill plate assembly of the present invention.
Wherein, 1, a linear type ridge platform block; 2. a corner type sill block; 3. a groove; 4. u-shaped steel bars; 5. horizontally sewing the template; 6. longitudinal seam formworks; 7. oppositely pulling the screw rod; 8. a type 3 fastener; 9. erecting a pipe; 10. a floor slab; 11. a rubber pad; 12. a nut; 13. horizontally sewing; 14. and (6) longitudinal sewing.
Detailed Description
As shown in fig. 1 to 4, the precast concrete sill (fig. 1) of the present invention includes 4 linear sill blocks 1 and 4 corner sill blocks 2, the height of the sill block is 140mm, and the width is the same as the width of the wall. The length of the linear type sill block 1 is 1000mm, and the length of both sides of the corner type sill block 2 is 500 mm. The bottom surface of the sill block is in a groove shape, the width of a notch of the bottom surface groove 3 is 30mm, and the depth of the notch is 30 mm. The bottom of the bank platform block is provided with a U-shaped steel bar 4, two end parts of the U-shaped steel bar 4 are embedded in the bank platform block, the bending part of the U-shaped steel bar 4 protrudes out of the bottom surface of the bank platform block, and the height of the protruding out of the lowest bottom surface of the bank platform block is 30 mm. Every bank platform piece sets up two U-shaped reinforcing bars 4 at least, and two U-shaped reinforcing bars 4 symmetry are located apart from bank platform piece tip 250mm department. The U-shaped steel bar 4 is used as a hanging ring when the sill block is transported, and is used as a supporting leg when the sill block is connected with a floor slab; in order to ensure the stable support, the bent part of the U-shaped steel bar 4 is a horizontal hook.
The construction method of the precast concrete sill platform comprises the following steps:
a. according to the needs of wading rooms such as toilets, kitchens and the like, the length of the part of the upturning sill table, the position of the door opening, the width of the longitudinal seam of the prefabricated sill table and the like are designed, then the prefabricated sill table is segmented, and the prefabricated sill table can be manufactured on site or in a special prefabricated concrete member processing factory. Designing a sill template assembly according to the segmented sill, and calculating the rigidity strength and the reinforcement measure of the template; the subsection and size division of the prefabricated sill table comprehensively consider various sizes of wading rooms of the whole project, specification types are reduced as far as possible, so that the reuse rate and turnover rate of various templates are improved, the subsection of the sill table cannot be too large, the hoisting difficulty is increased, too many longitudinal seams cannot be caused due to too short length, and management and construction are facilitated.
Sill template subassembly include horizontal seam template 5, longitudinal joint template 6, split screw 7, 3 type fastener 8 and frame pipe 9, horizontal seam template 5 and longitudinal joint template 6 are the channel-section steel structure, horizontal seam template 5 is including the straight template that corresponds linear type sill piece 1 and the angle template that corresponds corner type sill piece 2.
b. And positioning and paying off are carried out according to the mounting position of the ridge platform, two side lines of the ridge platform and positioning lines at two ends of the ridge platform are required to be paid out, and the floor 10 at the mounting position is cleaned and chiseled into a rough surface.
c. One surface of each sill block with the U-shaped steel bar 4 faces downwards and is supported on the floor slab 10, the U-shaped steel bar 4 plays a supporting role at the moment, and all sill blocks are placed in position according to the design positions of the sill blocks; 20 mm-30 mm of grouting seam longitudinal seams are reserved between the sill blocks, and the horizontal seams between the sill blocks and the floor slab are 30 mm; care should be taken that the seating is accurate.
d. Installing horizontal seam templates 5 on two sides of the ridge table, integrally installing the inner side horizontal seam templates to corresponding positions, then installing the outer side templates, connecting the bottom surfaces of the horizontal seam templates with a floor slab by using rubber mats 11, arranging bolt holes in the positions, corresponding to longitudinal seams of the ridge table, of the horizontal seam templates 5, penetrating counter-pull screws 7 into the bolt holes, sequentially penetrating the end parts, penetrating out of the horizontal seam templates on the two sides of the ridge table, of the counter-pull screws 7 through 3-type fasteners 8 and nuts 12, and pressing frame pipes 9 between the 3-type fasteners 8 and the horizontal seam templates 5; the split screw 7 comprises a middle rod and end rods screwed at two ends of the middle rod, the length of the middle rod is equal to or slightly less than the width of the ridge platform, and the middle rod is reserved in the ridge platform after the ridge platform is constructed.
The prefabricated concrete ridge platform is arranged between the inner side template and the outer side template and used for supporting, the width of a grouting seam can be ensured, the corner of the inner side template is not easy to deform due to the inclined strut, the four sides of the inner side template are mutually restricted and cannot move, the outer side template and the inner side template are fixedly connected through the counter-pulling screw rod, the position of the template is ensured to be accurate, the corner template is fastened through the frame pipe at the external corner of a wading room, and the corner of the template is ensured not to leak grout.
e. And a longitudinal seam template 6 is arranged at the position corresponding to the longitudinal seam of the ridge platform, the longitudinal seam template 6 is a channel steel with the width larger than that of the longitudinal seam, and the bottom surface of the longitudinal seam template is welded with the top surface of the horizontal seam template 5.
f. Grouting the horizontal seam and the longitudinal seam of the ridge platform by using a grouting pipe; the grouting pipe is a hose with the diameter smaller than that of the horizontal seam, the length of the grouting pipe is about the length of the operation length, the height of the longitudinal seam, the height of the outcrop and the length of the horizontal section (the length of the horizontal section is generally the length of the prefabricated sill table), the grouting pipe is placed in the horizontal seam at the lower part of the prefabricated sill table in advance, and the grouting pipe is exposed out of the longitudinal seam. Before grouting, a grouting pipe needs to be wetted, and grouting and drawing are carried out during grouting so as to ensure the grouting fullness;
CGM grouting material is selected, and the grouting material has good fluidity, high strength and no shrinkage. The grouting adopts a gravity grouting method. Preparation is carried out before CGM grouting material construction: the mechanical stirring adopts a concrete mixer or a mortar mixer; a plurality of stirring tanks and iron shovels are adopted for manual stirring; the end part of the grouting pipe is connected with a grouting funnel, grouting materials are poured into the funnel, a horizontal seam is reserved through the grouting pipe, the horizontal seam enters the longitudinal seam under the action of pressure after being fully grouted until the longitudinal seam is fully grouted, and grouting begins to be performed at one time from one end of the ridge platform.
And (4) maintaining after grouting is finished, and immediately covering a wet grass cover or a rock wool quilt within 30 minutes after grouting is finished, and keeping the wet grass cover or the rock wool quilt. And dismantling the sill formwork assembly after the sill maintenance meets the requirement.
Practice proves that the application of the invention has the following effects:
(1) the concrete sill table is accurately positioned;
(2) the concrete compactness of the concrete sill table is high, and the impermeability is good;
(3) the integrity of the concrete sill table is good;
(4) the concrete ridge platform is regular in shape and good in appearance impression;
(5) the method has the advantages of quick construction, good effect, construction period saving and cost saving;
(6) the invention is a construction method more suitable for the assembly structure, and the advantages in the assembly structure are more prominent;
(7) the method is also suitable for the construction of the wading room upper turning ridge platform of the light steel structure building.
Claims (9)
1. A construction method of a precast concrete sill table is characterized by comprising the following steps:
a. the concrete sill table comprises a linear sill table block and a corner sill table block, the bottom surface of the sill table block is in a step shape or a groove shape, a U-shaped steel bar is arranged at the bottom of the sill table block, two end parts of the U-shaped steel bar are embedded in the sill table block, the bending part of the U-shaped steel bar protrudes out of the bottom surface of the sill table block, and the U-shaped steel bar is used as a hanging ring during transportation of the sill table block and used as a supporting leg during connection of the sill table block and a floor slab; the height of the ridge table block is 120-170 mm;
arranging a ridge platform template component; the ridge platform template component comprises a horizontal seam template, a longitudinal seam template, a counter-pull screw rod, a 3-type fastener and a frame pipe, wherein the horizontal seam template and the longitudinal seam template are both of channel steel structures, and the horizontal seam template comprises a straight template corresponding to a linear ridge platform block and an angle template corresponding to a corner type ridge platform block;
b. positioning and paying off are carried out according to the installation position of the ridge platform, two side lines of the ridge platform and positioning lines at two ends of the ridge platform are required to be paid out, and the floor slab at the installation position is cleaned and chiseled into a rough surface;
c. one surface of each sill block with the U-shaped steel bars faces downwards and is supported on a floor slab, and all sill blocks are placed in position according to the design positions of the sill blocks;
d. installing horizontal seam templates on two sides of the ridge table, connecting the bottom surfaces of the horizontal seam templates with the floor slab by using rubber mats, arranging bolt holes in the positions, corresponding to longitudinal seams of the ridge table, of the horizontal seam templates, penetrating counter-pulling screws into the bolt holes, sequentially penetrating the end parts, penetrating out of the horizontal seam templates on the two sides of the ridge table, of the counter-pulling screws through type 3 fasteners and nuts, and pressing the frame pipes between the type 3 fasteners and the horizontal seam templates;
e. installing longitudinal seam templates at the positions corresponding to the longitudinal seams of the ridge platform, and welding the bottom surfaces of the longitudinal seam templates with the top surfaces of the horizontal seam templates;
f. grouting the horizontal seam and the longitudinal seam of the ridge platform by using a grouting pipe; and (5) maintaining after grouting is finished, and dismantling the sill formwork assembly after the sill construction meets the requirements.
2. The precast concrete sill table construction method of claim 1, wherein the counter screw comprises a middle bar and end bars screwed to both ends of the middle bar, the length of the middle bar is equal to or less than the width of the sill table, and the middle bar remains in the sill table after the sill table construction is completed.
3. The method as claimed in claim 1, wherein the grouting pipe is a flexible pipe having a diameter smaller than a horizontal joint, the length of the grouting pipe is the sum of the operation length, the longitudinal joint height, the exposed height and the length of the precast sill table, the grouting pipe is wetted before grouting, the grouting pipe is extended downward from the longitudinal joint until reaching the horizontal joint at the lower part of the precast sill table, a gravity grouting method is adopted, a grouting funnel is provided at the end of the grouting pipe, grouting material is poured into the grouting funnel, then the horizontal joint is injected through the grouting pipe, the horizontal joint is filled with grouting material and then enters the longitudinal joint under pressure until the longitudinal joint is filled, the grouting pipe is withdrawn while grouting to ensure the grouting degree, and grouting is performed once from one end of the sill table.
4. The method of claim 1, wherein the grouting material used for grouting has a strength of C30.
5. The method of constructing a precast concrete sill according to claim 1, wherein the length of the linear sill block is 1000 to 1200mm, and the length of both sides of the corner sill block is 500 to 600 mm.
6. The method of claim 1, wherein the bent portion of the U-shaped reinforcing bar protrudes from the lowest bottom surface of the sill block by a height of 30 mm.
7. The method of constructing a precast concrete sill according to claim 1, characterized in that the width of the notch of the groove-shaped bottom surface of the sill block is 30mm and the depth of the notch is 30 mm.
8. The method of claim 1, wherein at least two U-shaped reinforcing bars are provided for each sill block, and the two U-shaped reinforcing bars are symmetrically provided at a distance of 250mm from an end of the sill block.
9. The method of claim 1, wherein the bent portion of the U-shaped reinforcing bar is a horizontal hook.
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| CN114016873B (en) * | 2021-09-27 | 2023-07-18 | 中国一冶集团有限公司 | Construction method for civil air defense threshold sill pouring and civil air defense door installation |
| CN114991358B (en) * | 2022-06-30 | 2023-07-25 | 中国建筑第二工程局有限公司 | Disassembling-free template of waterproof flip bucket and integrated construction method thereof |
| CN115807485B (en) * | 2022-12-23 | 2023-08-11 | 深圳市胜德建筑科技有限公司 | Assembled prefabricated inverted ridge connecting structure and construction method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206681142U (en) * | 2017-03-14 | 2017-11-28 | 中天建设集团有限公司 | A kind of prefabricated anti-bank in toilet |
| CN207419752U (en) * | 2017-10-31 | 2018-05-29 | 中国建筑第二工程局有限公司 | Can assemble anti-bank of precast concrete |
| CN108487630A (en) * | 2018-04-03 | 2018-09-04 | 河南省第建筑工程集团有限责任公司 | Coagulation earth steps platform prefabrication and assembly construction construction method |
| CN210032145U (en) * | 2019-05-16 | 2020-02-07 | 上海宝冶集团有限公司 | Precast concrete anti-bank |
| CN213382193U (en) * | 2020-09-28 | 2021-06-08 | 河北省第四建筑工程有限公司 | Precast concrete bank platform |
-
2020
- 2020-09-28 CN CN202011042363.3A patent/CN112049413B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206681142U (en) * | 2017-03-14 | 2017-11-28 | 中天建设集团有限公司 | A kind of prefabricated anti-bank in toilet |
| CN207419752U (en) * | 2017-10-31 | 2018-05-29 | 中国建筑第二工程局有限公司 | Can assemble anti-bank of precast concrete |
| CN108487630A (en) * | 2018-04-03 | 2018-09-04 | 河南省第建筑工程集团有限责任公司 | Coagulation earth steps platform prefabrication and assembly construction construction method |
| CN210032145U (en) * | 2019-05-16 | 2020-02-07 | 上海宝冶集团有限公司 | Precast concrete anti-bank |
| CN213382193U (en) * | 2020-09-28 | 2021-06-08 | 河北省第四建筑工程有限公司 | Precast concrete bank platform |
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| CN112049413A (en) | 2020-12-08 |
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