CN201372490Y - Post pouring strip of concrete structure and concrete member - Google Patents
Post pouring strip of concrete structure and concrete member Download PDFInfo
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- CN201372490Y CN201372490Y CN200920105474U CN200920105474U CN201372490Y CN 201372490 Y CN201372490 Y CN 201372490Y CN 200920105474 U CN200920105474 U CN 200920105474U CN 200920105474 U CN200920105474 U CN 200920105474U CN 201372490 Y CN201372490 Y CN 201372490Y
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Abstract
The utility model discloses a post pouring strip of a concrete structure and a concrete member, and belongs to the field of construction of concrete building structures. The concrete post pouring strip is formed by secondarily pouring self-compacting expansive concrete in the concrete structure, the width is 100-600mm, and the cross section of the post pouring strip is a straight seam, a T-shaped seam or an I-shaped seam. The concrete member uses the post pouring strip with the structure. The design of the structure of the concrete post pouring strip is used for releasing the deformation and the stress of the concrete structure and reducing harmful cracks generated by the structure, thereby having the advantages of reducing pouring volume of the secondary construction, simplifying construction and operation, simplifying construction process, facilitating arrangement at the parts with centralized structural stress and great deformation, significantly reducing construction cost and labor intensity, having no vibration noise, improving operation environment and the like and being applicable to popularization and application in the construction industry.
Description
Technical field
The utility model belongs to the concrete building structures construction field, is specifically related to a kind of structure design of late poured band, and the concrete component with the design of this ater-casting.
Background technology
The ater-casting is a kind of construction measure that is used to discharge shrinkage strain and stress that often uses in the concrete building structures construction, and it is arranged among the reinforced concrete member, uses extensively in structure of reinforced concrete.But existing ater-casting width is 700-1000mm, because it is many to be used for the concreting amount of ater-casting, generally need when building the ater-casting, set up secondary pumping equipment again, for the concrete component that waterproof requirement is arranged, also need to build the position at secondary especially with steel plate or elastomeric material water stop structure is set, it is more numerous and diverse to construct; In addition, the cleaning of ater-casting trouble, width is bigger in addition, at some privileged sites the comparison difficulty is set, so unit in charge of construction scarcely is willing to be intended to adopt in the construction, has limited this The Application of Technology.
The utility model content
The purpose of this utility model provide a kind of width less, can be after contraction distortion of concrete structure reaches requirement, adopt the self-compaction expansive concrete to carry out the concrete structure ater-casting that secondary is built at any time, reach the distortion that discharges concrete structure, reduce the purpose that structure produces harmful crack.
To achieve these goals, the utility model is by the following technical solutions:
A kind of concrete structure ater-casting is built with self-compaction expansive concrete secondary in concrete structure and is formed, and its width is 100-600mm.Its width the best is 100mm.
The cross section of described ater-casting is vertical masonry joint, T groove part or I-shaped groove part.
Another purpose of the utility model provides a kind of concrete component that has the said structure ater-casting.
Have above-described ater-casting in this concrete component.
Concrete, the cross section of described ater-casting is a vertical masonry joint, is positioned in the middle of the concrete component.
Perhaps, the cross section of described ater-casting is the T groove part, and the long limit of T groove part is positioned in the middle of the concrete component, and T groove part two minor faces are arranged in the one-sided rebar surface of concrete component.
Perhaps, the cross section of described ater-casting is the I-shaped groove part, and the long limit of I-shaped groove part is positioned in the middle of the concrete component, and I-shaped groove part minor face distributes and is positioned at concrete component bilateral rebar surface.
Adopt above scheme, the cross section of the utility model ater-casting is a kind of in vertical masonry joint, T type or the I-shaped groove part, the member optimal cross-section that does not have waterproof requirement is a vertical masonry joint, the horizontal member that waterproof requirement is arranged, optimal cross-section is the T groove part, the vertical lap seam that waterproof requirement is arranged, optimal cross-section are the I-shaped groove part; The thickness of the wing of T type or I-shaped groove part (referring to minor face) is the thickness of concrete component reinforcement cover.
The above-mentioned self-compaction expansive concrete that is used to build the ater-casting, its slump is greater than 220mm, limited expansion rate is 0.025%-0.060%, compressive strength 20-100MPa, can be a kind of in ready mix concrete or the dry-mix concrete, preferred plan is the dry-mix concrete that adopts factory to prepare in proportion in advance, adds the water manufacturing again through the scene.
The utility model adopts above technical scheme, and its advantage is as follows:
1, reduce the amount of building of secondary construction, constructing operation is easy, simplifies construction technology;
2, be convenient to concentrate and be out of shape big position the ater-casting is set at structural stress;
3, can significantly reduce operating expenses and labour intensity;
4, friction noise can improve operating environment.
Description of drawings
Fig. 1 has the schematic diagram of the concrete component of vertical masonry joint structure ater-casting for the utility model
Fig. 2 has the schematic diagram of the concrete component of T groove part structure ater-casting for the utility model
Fig. 3 is the schematic diagram of the concrete component of the utility model I shape crack structure ater-casting
The specific embodiment
The utility model at first is provided at release distortion and the design of stress ater-casting that the bigger position of the cast-in-situ concrete deformation of member and stress ratio is provided with.The ater-casting is to build after back distortion and stress obtains release at concrete structure, forms through secondary after-pouring self-compaction expansive concrete again.The time of secondary after-pouring determines that according to concrete component malformation needs the self-compaction expansive concrete that secondary is built in the ater-casting needs moist curing 7-28 days by the designer.
Please in conjunction with Fig. 1～shown in Figure 3, the ater-casting 3 in the utility model is to build with self-compaction expansive concrete secondary to form in the concrete 1 of building earlier for the first time, and the seam width of ater-casting 3 is 100-600mm, preferably 100mm.
According to different concrete component requirements, the ater-casting can be provided with different cross-sectional structure patterns:
Section shows a kind of concrete component that does not have waterproof requirement that is applicable to as shown in Figure 1, and wherein the cross section of ater-casting 3 is the vertical masonry joint form, and it is positioned in the middle of the concrete structure 1 of building for the first time.The constructing operation order is as follows: according to the good reinforcing bar 2 of rebar spacing, bar diameter colligation of Structural Design Requirement, and at the position, reservation ater-casting of structure design with template or steel wire (plate) net every once and between the secondary concrete of building, concreting 1, treat after the concrete coagulation sclerosis, dismountable template or cleaning steel wire (plate) net surface form constuction joint 4.Article two, the space between the constuction joint is ater-casting 3.After the distortion of the concrete 1 of grade in an imperial examination one-time-concreting and stress obtained discharging, secondary was built the self-compaction expansive concrete in the ater-casting again.
Section shows a kind of level (parallel to the ground) concrete component that is applicable to waterproof requirement as shown in Figure 2, and ater-casting 3 cross sections are the T groove part, and the upper limb 31 of T groove part is positioned at the upper surface of concrete component, and thickness is the thickness of reinforcement cover.The constructing operation order is as follows: according to the good reinforcing bar 2 of rebar spacing, bar diameter colligation of Structural Design Requirement, and at the position, reservation ater-casting of structure design with template or steel wire (plate) net every once and between the secondary concrete of building, concreting 1, treat after the concrete coagulation sclerosis, dismountable template or cleaning steel wire (plate) net surface form constuction joint 4.Article two, the space between the constuction joint is ater-casting 3.After the distortion of the concrete 1 of grade in an imperial examination one-time-concreting and stress obtained discharging, secondary was built the self-compaction expansive concrete in the ater-casting again.
Section as shown in Figure 3; show a kind of vertical (perpendicular to the ground) concrete component that is applicable to waterproof requirement; ater-casting 3 cross sections are the I-shaped groove part, and the upper and lower wing (31) of I shape is positioned at inside and outside two surfaces of concrete component, and thickness is the thickness of reinforcement cover.The constructing operation order is as follows: according to the good reinforcing bar 2 of rebar spacing, bar diameter colligation of Structural Design Requirement, and at the position, reservation ater-casting of structure design with template or steel wire (plate) net every once and between the secondary concrete of building, concreting 1, treat after the concrete coagulation sclerosis, dismountable template or cleaning steel wire (plate) net surface form constuction joint 4.Article two, the space between the constuction joint is ater-casting 3.After the distortion of the concrete 1 of grade in an imperial examination one-time-concreting and stress obtained discharging, secondary was built the self-compaction expansive concrete in the ater-casting again.
In the utility model, the self-compaction expansive concrete that the secondary after-pouring is used adopt commercial cement expansive material (as calcium sulphoaluminate class expansion agent, calcium oxide-calcium sulphoaluminate class expansion agent, calcium oxide expansion agents etc.), water reducing agent (as polycarboxylic acid high efficiency water reducing agent, naphthalene series high-efficiency water-reducing agent, melamine high-efficiency water-reducing agent, sulfamate high-effective water-reducing agent etc.), cement, ground slag powder or flyash, sand, stone, water by a certain percentage mix form, its ratio is determined by material quality and concrete technology index.The slump of self-compaction expansive concrete is greater than 220mm, limited expansion rate is 0.025%-0.060%, compressive strength 20-100MPa, can be a kind of in ready mix concrete or the dry-mix concrete, preferred plan is the dry-mix concrete that adopts factory to prepare in proportion in advance, adds the water manufacturing again through the scene.
Claims (7)
1. concrete structure ater-casting is characterized in that: build with self-compaction expansive concrete secondary in concrete structure and form, its width is 100-600mm.
2. concrete structure according to claim 1 ater-casting is characterized in that: its width is 100mm.
3. concrete structure according to claim 1 and 2 ater-casting is characterized in that: the cross section of described ater-casting is vertical masonry joint, T groove part or I-shaped groove part.
4, a kind of concrete component is characterized in that: have claim 1 or 2 described ater-castings in concrete component.
5, according to the described concrete component of claim 4, it is characterized in that: the cross section of described ater-casting is a vertical masonry joint, is positioned in the middle of the concrete component.
6, according to the described concrete component of claim 4, it is characterized in that: the cross section of described ater-casting is the T groove part, and the long limit of T groove part is positioned in the middle of the concrete component, and T groove part two minor faces are arranged in the one-sided rebar surface of concrete component.
7, according to the described concrete component of claim 4, it is characterized in that: the cross section of described ater-casting is the I-shaped groove part, and the long limit of I-shaped groove part is positioned in the middle of the concrete component, and I-shaped groove part minor face distributes and is positioned at concrete component bilateral rebar surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920105474U CN201372490Y (en) | 2009-02-11 | 2009-02-11 | Post pouring strip of concrete structure and concrete member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920105474U CN201372490Y (en) | 2009-02-11 | 2009-02-11 | Post pouring strip of concrete structure and concrete member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201372490Y true CN201372490Y (en) | 2009-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920105474U Expired - Lifetime CN201372490Y (en) | 2009-02-11 | 2009-02-11 | Post pouring strip of concrete structure and concrete member |
Country Status (1)
| Country | Link |
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| CN (1) | CN201372490Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102912984A (en) * | 2012-10-31 | 2013-02-06 | 中冶天工上海十三冶建设有限公司 | Construction method of invisible construction joint of concrete external wall |
| CN103276752A (en) * | 2013-06-20 | 2013-09-04 | 江苏城市职业学院 | Construction method of underground continuous wall expansive concrete joint |
| CN104372862A (en) * | 2014-11-17 | 2015-02-25 | 中国葛洲坝集团第三工程有限公司 | Z type water and grout stopping sheet and application method thereof |
| CN105970989A (en) * | 2016-06-22 | 2016-09-28 | 中国建筑第二工程局有限公司 | Seamless construction method for raft foundation |
| CN114908791A (en) * | 2022-05-12 | 2022-08-16 | 山东建筑大学 | Assembled plate type foundation with splicing structure and construction process |
-
2009
- 2009-02-11 CN CN200920105474U patent/CN201372490Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102912984A (en) * | 2012-10-31 | 2013-02-06 | 中冶天工上海十三冶建设有限公司 | Construction method of invisible construction joint of concrete external wall |
| CN102912984B (en) * | 2012-10-31 | 2015-05-06 | 中冶天工上海十三冶建设有限公司 | Construction method of invisible construction joint of concrete external wall |
| CN103276752A (en) * | 2013-06-20 | 2013-09-04 | 江苏城市职业学院 | Construction method of underground continuous wall expansive concrete joint |
| CN104372862A (en) * | 2014-11-17 | 2015-02-25 | 中国葛洲坝集团第三工程有限公司 | Z type water and grout stopping sheet and application method thereof |
| CN105970989A (en) * | 2016-06-22 | 2016-09-28 | 中国建筑第二工程局有限公司 | Seamless construction method for raft foundation |
| CN114908791A (en) * | 2022-05-12 | 2022-08-16 | 山东建筑大学 | Assembled plate type foundation with splicing structure and construction process |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091230 |
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| CX01 | Expiry of patent term |