CN107859187B - Protection device for expansion joint water stop and water stop mounting method - Google Patents
Protection device for expansion joint water stop and water stop mounting method Download PDFInfo
- Publication number
- CN107859187B CN107859187B CN201710943686.1A CN201710943686A CN107859187B CN 107859187 B CN107859187 B CN 107859187B CN 201710943686 A CN201710943686 A CN 201710943686A CN 107859187 B CN107859187 B CN 107859187B
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- Prior art keywords
- water stop
- supporting groove
- supporting
- expansion joint
- plate
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6803—Joint covers
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/665—Sheets or foils impervious to water and water vapor
-
- 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)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
Abstract
The invention discloses a protection device for an expansion joint water stop and a water stop installation method, which comprises the following steps: embedding a water stop part in a preliminary concrete structure, and respectively embedding an upper supporting groove and a lower supporting groove on the upper side and the lower side of the exposed part of the water stop when the preliminary concrete pouring and formwork supporting are carried out; the supporting plate is provided with holes, and the exposed ends of the supporting plate penetrating through the stressed steel bars are attached to the opening ends of the upper supporting groove and the lower supporting groove; adhering the fixing strip to the supporting plate; the fixing plate penetrates through the exposed end of the stressed steel bar and is pressed and fixed through a screw rod; sequentially removing the screw, the fixing plate, the fixing strip and the supporting plate, and pouring the later-stage concrete into the grooves of the pre-buried upper and lower supporting grooves to enable the water stop belt and the later-stage concrete structure to be poured into a whole; the protective device bears the lateral force generated by later concrete pouring, effectively prevents the water stop from shifting or cracking, and has good protective effect on the water stop.
Description
Technical Field
The invention belongs to the technical field of water stopping structures, and particularly relates to a protection device for a water stop belt of an expansion joint of a concrete plate (wall) and a water stop belt installation method.
Background
In structural engineering, an expansion joint is arranged at a specific part of a building as a construction measure to avoid cracking and damage of the structure caused by the change of climate temperature (thermal expansion and contraction). The expansion joint equally divides the components such as the wall body and the floor slab into two independent parts, so that the structure can horizontally expand and contract along the length direction. In order to ensure the waterproof effect of the expansion joint in the underground structural engineering, a water stop belt is usually required to be arranged at the position of the expansion joint, and the water stop belt and concrete pouring are combined into a whole to prevent leakage at the joint and achieve the water stop effect. The traditional water stop setting method is as follows: half of the water stop is buried in the concrete structure poured in advance, the other half is exposed outside and protected by a box baffle, the box baffle is removed when the concrete at the other side of the expansion joint is poured in the later stage, and the exposed water stop and the concrete slab (wall) poured in the later stage are poured into a whole. The conventional water stop arrangement method has the following disadvantages: 1. a large space is reserved outside the expansion joint for protecting the water stop belt by the construction box type baffle; 2. the box-type baffle plate has complicated processing procedures and large material consumption, one side of the box-type baffle plate is required to be fixed on the enclosure structure in a back-to-back mode, and the construction reliability is poor; 3. when the concrete structure is poured in the later period, the water stop needs to bear lateral force generated by pouring concrete, so that the box-shaped baffle moves to cause the water stop to shift, thereby influencing the tightness and the water stop effect of the water stop; 4. when the structures on two sides of the expansion joint generate uneven sedimentation, the fracture probability of the water stop is extremely high, and the protection effect of the water stop is poor.
Disclosure of Invention
Aiming at the defects or improvement demands of the prior art, the invention provides a protection device for an expansion joint water stop and a water stop installation method, wherein an upper supporting groove and a lower supporting groove are respectively arranged on the upper side and the lower side of the exposed part of the water stop, so that the lateral force generated by later casting concrete is born, the capability of resisting uneven settlement on the two sides of the expansion joint is enhanced, the water stop is prevented from shifting or cracking, and a good protection effect is achieved on the water stop by arranging a supporting plate, a fixing strip and a fixing plate.
In order to achieve the above object, according to one aspect of the present invention, there is provided a protection device for an expansion joint water stop belt, comprising a support groove, a support plate, a fixing plate and a fixing strip;
the two support grooves are respectively arranged on the upper side and the lower side of the exposed end of the water stop belt, the support grooves are pre-embedded in the concrete structure poured in advance, and the opening ends of the support grooves are aligned to the expansion joints;
the supporting plate is closely attached to the opening end of the supporting groove, and a through hole allowing the exposed end of the stressed steel bar to pass through is formed in the supporting plate;
the fixing strips are arranged between the fixing plate and the supporting plate, and the fixing strips are arranged at intervals along the longitudinal direction;
the fixing plate is provided with a through hole allowing the exposed end of the stressed steel bar to pass through the exposed end of the stressed steel bar and is fixed through a screw rod, and the screw rod is fastened to apply horizontal force, so that the fixing strip compresses the supporting plate to support and strengthen the supporting groove and the water stop belt.
Preferably, in the protection device for the expansion joint water stop, the supporting groove is a wood box with a trapezoid cross section, and the opposite surface of the trapezoid inclined surface of the wood box is the contact surface between the supporting groove and the water stop.
Preferably, the support plate of the protection device for the expansion joint water stop belt is plywood, and the thickness of the support plate is 15mm.
Preferably, the fixing plate of the protection device for the expansion joint water stop belt is channel steel.
Preferably, in the protection device for the expansion joint water stop belt, the fixing strips are square wood strips with the cross section dimension of 100mm multiplied by 100mm, the length of each square wood strip is slightly larger than the width of the water stop belt, and the longitudinal interval between adjacent square wood strips is 300mm.
Preferably, the square batten of the protection device for the expansion joint water stop belt is adhered to the plywood.
Preferably, in the protection device for the expansion joint water stop belt, the screw rod and the stressed steel bar are fixed through welding.
According to another aspect of the present invention, there is provided a water stop installation method of a protection device using the expansion joint water stop, comprising the steps of:
s1: embedding a water stop part in a preliminary concrete structure, and respectively embedding an upper supporting groove and a lower supporting groove on the upper side and the lower side of the exposed part of the water stop when the preliminary concrete pouring and formwork supporting are carried out;
s2: the supporting plate is provided with holes, and the exposed ends of the supporting plate penetrating through the stressed steel bars are attached to the opening ends of the upper supporting groove and the lower supporting groove;
s3: adhering the fixing strip to the supporting plate; the fixing plate penetrates through the exposed end of the stressed steel bar and is pressed and fixed through a screw rod;
s4: and sequentially removing the screw, the fixing plate, the fixing strip and the supporting plate, and pouring the later-stage concrete into the grooves of the pre-buried upper and lower supporting grooves, so that the water stop belt and the later-stage concrete structure are poured into a whole.
In general, the above technical solutions conceived by the present invention, compared with the prior art, enable the following beneficial effects to be obtained:
(1) According to the expansion joint water stop protection device and the water stop installation method, the support grooves are pre-embedded in the early-stage poured concrete, and the water stop is supported and protected on the one hand; on the other hand, the method can be used for pouring the later concrete into the grooves of the expansion joint, so that the integrity and the waterproofness of the concrete structure connection at the two sides of the expansion joint are ensured;
(2) According to the expansion joint water stop protection device and the water stop installation method, the water stop is effectively prevented from shifting, cracking, breaking and the like through three-stage fixing protection of the supporting groove, the supporting plate, the fixing strip and the fixing plate, and the water stop protection effect is good; the material of the protection device is cheap and easy to obtain, the operation is simple, and the occupied construction space is small;
(3) The expansion joint water stop belt protection device and the water stop belt installation method provided by the invention can enhance the capability of resisting uneven settlement on two sides of the expansion joint, so that the structure can horizontally stretch and retract along the length direction better.
Drawings
FIG. 1 is a cross-sectional view of a conventional waterstop protection method;
FIG. 2 is an effect diagram of a conventional waterstop protection method;
FIG. 3 is a cross-sectional view of an expansion joint water stop protection device provided by an embodiment of the invention;
fig. 4 is an effect diagram of the expansion joint water stop protection device provided by the embodiment of the invention.
Like reference numerals denote like technical features throughout the drawings, in particular: 1-water stop, 2-early pouring concrete slab (wall), 3-box baffle, 4-expansion joint, 5-later pouring concrete slab (wall), 6-supporting groove, 7-supporting plate, 8-stress steel bar, 9-fixing strip, 10-fixing plate and 11-screw.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
FIG. 1 is a cross-sectional view of a conventional waterstop protection method; FIG. 2 is an effect diagram of a conventional waterstop protection method; half of the water stop belt 1 is buried in a concrete slab (wall) 2 structure poured in advance, the other half is exposed outside and protected by a box baffle 3, the box baffle 3 is removed when a concrete slab (wall) 5 at the other side of the expansion joint 4 is poured in the later stage, and the exposed part of the water stop belt 1 and the concrete slab (wall) 5 poured in the later stage are poured into a whole. In such a way, a large space is reserved outside the expansion joint 4 for placing the box-shaped baffle 3 during construction, and the water stop belt 1 needs to bear lateral force generated by pouring concrete during pouring of a later concrete structure, so that the water stop belt 1 is caused to shift, and the tightness and the water stop effect of the water stop belt 1 are affected; when the structures on two sides of the expansion joint 4 generate uneven settlement, the water stop belt 1 is extremely easy to break, thereby influencing the waterproof effect of the expansion joint 4.
FIG. 3 is a cross-sectional view of an expansion joint water stop protection device provided by an embodiment of the invention; specifically, the water stop 1 is embedded in a concrete slab (wall) 2 structure which is poured in advance, an upper supporting groove 6 and a lower supporting groove 6 are embedded in advance when concrete is poured in advance for supporting a formwork, one exposed end of the water stop 1 is clamped by the upper supporting groove 6 and the lower supporting groove 6, the opening direction of the upper supporting groove and the lower supporting groove is opposite to an expansion joint 4, and the size of the contact part between the upper supporting groove 6 and the lower supporting groove 6 and the water stop 1 is required to be equal to the size of the exposed part of the water stop 1 so as to achieve a better supporting effect; the material, size and section shape of the upper and lower support grooves 6 are not particularly limited, and depending on the specific construction requirements, in a preferred embodiment, the upper and lower support grooves 6 are boxes (hereinafter referred to as upper wooden box and lower wooden box) with trapezoidal section shape, and the corresponding surfaces of the trapezoidal inclined surfaces are the contact surfaces of the upper and lower wooden boxes and the water stop belt 1; the wood materials are cheap and easy to obtain, the wood box with the trapezoid section shape is selected to facilitate later concrete pouring, and the upper and lower wood boxes play a first-stage protection role of the water stop belt.
After the concrete slab (wall) 2 poured in advance is finished, a supporting plate 7 is arranged at the opening ends of the upper and lower wooden boxes, one side of the supporting plate 7 is tightly attached to the opening ends of the upper and lower wooden boxes, holes are formed at the contact part of the supporting plate 7 and the stress steel bar 8, and the supporting plate 7 passes through the stress steel bar 8 and is tightly attached to the upper and lower wooden boxes; the material and thickness of the support plate 7 are not particularly limited, but in this embodiment, it is preferably 15mm thick plywood, which exerts a second-stage protection effect on the water stop.
In order to achieve a better protection effect, a fixing strip 9 and a fixing plate 10 are arranged on the other side of the supporting plate 7, the fixing strip 9 is placed between the supporting plate 7 and the fixing plate 10, a hole is formed in the contact part of the fixing plate 10 and the stressed steel bar 8, the fixing plate 10 passes through the exposed end part of the stressed steel bar 8 and is fixed through a screw 11, and the screw 11 is fastened to apply horizontal force, so that the fixing plate 10 and the fixing strip 9 are tightly pressed against the supporting plate 7, and a better protection effect of the water stop belt 1 is achieved; the screw 11 is welded with the stressed steel bar 8, so that the fixing effect is prevented from being influenced by looseness. The material, size and number of the fixing strips 9 are not particularly limited, in this embodiment, square battens of 100mm×100mm are preferable, the spacing distance between adjacent square battens is preferably 300mm, and the number of the square battens depends on the height of the concrete slab (wall); the material and shape of the fixing plate 10 are not particularly limited, in this embodiment, a 10# channel steel is preferable, and a plurality of square battens are placed in the grooves of the 10# channel steel; in order to facilitate construction, a plurality of square battens can be adhered to the plywood, and then 10# channel steel is fixed; the square battens and the channel steel further strengthen the fixation protection of the water stop belt and exert the three-level protection effect.
When concrete plates (walls) 5 on the other side of the expansion joint 4 are poured in the later period, the screw rods 11, the channel steel, the square wood strips and the plywood are removed in sequence, later period concrete is poured in the grooves of the upper and lower wood boxes which are buried in advance, so that the reserved water stop belt 1 and the later period concrete plates (walls) 5 are integrally poured, and the integrity and the waterproofness of the concrete structure connection on the two sides of the expansion joint 4 are ensured; meanwhile, the upper wooden box and the lower wooden box bear lateral force generated during later pouring, so that a good supporting and protecting effect is exerted, and the water stop belt 1 is prevented from shifting, and even is cracked and broken.
The water stop installation method based on the expansion joint water stop protection device preferably comprises the following steps:
s1: constructing a pre-stage structural reinforcement, burying a water stop 1 part in a pre-stage concrete slab (wall) 2 structure, and burying an upper supporting groove 6 and a lower supporting groove 6 respectively on the upper side and the lower side of the exposed part of the water stop 1 when pouring concrete and supporting a formwork, wherein the open ends of the upper supporting groove 6 and the lower supporting groove 6 are opposite to an expansion joint 4;
s2: the upper end and the lower end of the supporting plate 7 are provided with through holes allowing the stress steel bars 8 to pass through, the exposed ends of the stress steel bars 8 of the supporting plate 7 are closely attached to the opening ends of the upper supporting groove 6 and the lower supporting groove 6;
s3: a plurality of fixing strips 9 are stuck on the supporting plate 7 at certain longitudinal intervals;
s4: the upper end and the lower end of the fixed plate 10 are provided with through holes allowing the stressed steel bars 8 to pass through, the fixed plate 10 passes through the exposed ends of the stressed steel bars 8 and is pressed and fixed by the screw rods 11, and the screw rods 11 are welded on the stressed steel bars 8;
s5: the screw rod 11, the fixing plate 10, the fixing strip 9 and the supporting plate 7 are removed in sequence, and later concrete is poured into the grooves of the upper supporting groove 6 and the lower supporting groove 6, so that the water stop belt 1 and the later concrete slab (wall) 5 are integrally cast.
Compared with the existing water stop protection device, the expansion joint water stop protection device provided by the invention bears the lateral force generated by pouring concrete, has a good protection effect on the water stop, occupies smaller space than a box-shaped baffle, and can enhance the capability of resisting uneven settlement on two sides of an expansion joint, so that the structure can horizontally stretch in a long direction better.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (7)
1. The protection device of the expansion joint water stop belt is characterized by comprising a supporting groove (6), a supporting plate (7), a fixing strip (9) and a fixing plate (10);
the two support grooves (6) are respectively arranged on the upper side and the lower side of the exposed end of the water stop belt (1), the support grooves (6) are pre-buried in the structure of the concrete (2) poured in advance, and the opening ends of the support grooves are opposite to the expansion joints (4); the supporting groove (6) is a wood box with a trapezoid section, and the opposite surface of the trapezoid inclined surface of the wood box is the contact surface of the supporting groove (6) and the water stop belt (1);
the supporting plate (7) is closely attached to the opening end of the supporting groove (6), and a through hole allowing the exposed end of the stressed steel bar (8) to pass through is formed in the supporting plate;
the fixing strips (9) are arranged between the supporting plate (7) and the fixing plate (10), and the fixing strips (9) are arranged at intervals along the longitudinal direction;
the fixing plate (10) is provided with a through hole allowing the exposed end of the stressed steel bar (8) to pass through the exposed end of the stressed steel bar (8) and is fixed through a screw (11), and the screw (11) is fastened to apply horizontal force to enable the fixing strip (9) to press the supporting plate (7) so as to support and reinforce the supporting groove (6) and the water stop belt (1).
2. A protection device for an expansion joint water stop according to claim 1, characterized in that the support plate (7) is a plywood plate with a thickness of 15mm.
3. The protection device for an expansion joint water stop according to claim 1, wherein the fixing plate (10) is a channel steel.
4. A protection device for an expansion joint water stop according to claim 1, characterized in that the fixing strips (9) are square strips with cross-sectional dimensions of 100mm x 100mm, the length of the square strips being slightly greater than the width of the water stop, and the longitudinal spacing of adjacent square strips being 300mm.
5. The expansion joint water stop protective device as claimed in claim 4, wherein said square batten is adhered to the plywood.
6. The protection device for the expansion joint water stop belt according to claim 1, wherein the screw (11) and the stressed steel bar (8) are fixed through welding.
7. A water stop installation method using the protection device for an expansion joint water stop according to any one of claims 1 to 6, comprising the steps of:
s1: embedding a water stop belt (1) in a structure of early concrete (2), and embedding an upper supporting groove (6) and a lower supporting groove (6) on the upper side and the lower side of the exposed part of the water stop belt (1) respectively when the early concrete pouring formwork is carried out; the supporting groove (6) is a wood box with a trapezoid section, and the opposite surface of the trapezoid inclined surface of the wood box is the contact surface of the supporting groove (6) and the water stop belt (1);
s2: the supporting plate (7) is provided with holes, and the exposed ends of the supporting plate (7) penetrating through the stressed steel bars (8) are attached to the opening ends of the upper supporting groove (6) and the lower supporting groove (6);
s3: adhering the fixing strip (9) to the supporting plate (7); the fixing plate (10) passes through the exposed end of the stressed steel bar (8) and is pressed and fixed by the screw (11);
s4: the screw rod (11), the fixing plate (10), the fixing strip (9) and the supporting plate (7) are sequentially dismantled, and later concrete is poured into the grooves of the pre-buried upper supporting groove (6) and the pre-buried lower supporting groove (6), so that the water stop belt (1) and the later concrete (5) are integrally structurally poured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710943686.1A CN107859187B (en) | 2017-10-11 | 2017-10-11 | Protection device for expansion joint water stop and water stop mounting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710943686.1A CN107859187B (en) | 2017-10-11 | 2017-10-11 | Protection device for expansion joint water stop and water stop mounting method |
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| Publication Number | Publication Date |
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| CN107859187A CN107859187A (en) | 2018-03-30 |
| CN107859187B true CN107859187B (en) | 2023-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710943686.1A Active CN107859187B (en) | 2017-10-11 | 2017-10-11 | Protection device for expansion joint water stop and water stop mounting method |
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| CN (1) | CN107859187B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112144577B (en) * | 2020-09-23 | 2022-06-03 | 江苏省建筑设计研究院股份有限公司 | Interim shutoff node in basement bottom plate post-cast strip |
| CN113833137A (en) * | 2021-11-04 | 2021-12-24 | 扬州工业职业技术学院 | Vertical seam connection structure of assembled shear force wall |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1562661A (en) * | 1977-01-27 | 1980-03-12 | Burmah Ind Prod Ltd | Seals for construction joints in concrete slabs or other concrete structures |
| CN101876184B (en) * | 2010-06-23 | 2011-08-10 | 河北省第二建筑工程公司 | Construction method of expansion joint of pool |
| CN201908363U (en) * | 2010-12-22 | 2011-07-27 | 中国建筑第六工程局有限公司 | Durable water stop structure at joint between new and old concrete |
| CN205100120U (en) * | 2015-10-30 | 2016-03-23 | 中国水利水电第八工程局有限公司 | Bury mounting structure of formula waterstop in box culvert |
| CN105780940B (en) * | 2016-04-28 | 2018-02-09 | 中国化学工程第三建设有限公司 | building expansion joint anti-leakage structure |
| CN205742504U (en) * | 2016-06-30 | 2016-11-30 | 青建国际集团有限公司 | A kind of intensive construction joint of ultra-large type cistern |
| CN206267363U (en) * | 2016-12-13 | 2017-06-20 | 马小平 | A kind of pin-connected panel lightweight concrete integral wall |
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2017
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