CN201581550U - Overlong structural beam provided with guide holes - Google Patents
Overlong structural beam provided with guide holes Download PDFInfo
- Publication number
- CN201581550U CN201581550U CN 200920286204 CN200920286204U CN201581550U CN 201581550 U CN201581550 U CN 201581550U CN 200920286204 CN200920286204 CN 200920286204 CN 200920286204 U CN200920286204 U CN 200920286204U CN 201581550 U CN201581550 U CN 201581550U
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- Prior art keywords
- hole
- inducing
- concrete
- structural beam
- super
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Abstract
The utility model discloses an overlong structural beam provided with guide holes, comprising concrete, reinforcing steel bars and a plurality of guide holes, wherein the reinforcing steel bars are provided with the guide holes which are fixedly arranged on the bottom reinforcing steel bars of the structural beam. When using the overlong structural beam provided with the guide holes for construction, each guide hole is like a breathing opening, and the internal and external temperature difference of the concrete can be reduced; and when the concrete is used for construction, the stress at the position can be effectively released, the crack in the concrete structure can be reduced and the cost is low.
Description
Technical field
The utility model relates to building operations, relates in particular to a kind of super-long structural beam of inducing the hole that is provided with.
Background technology
In the construction work, the crack of concrete structure is comparatively general, and the type in crack is also a lot, but can be summed up as the two big class cracks that caused by external load and distortion substantially by the origin cause of formation.Wherein, because the temperature shrinkage crack that concrete shrinkage and temperature deformation cause jointly is modal crack in the actual engineering.Structure temperature, shrinkage stress produce owing to malformation is tied.Need only the intensity of material in theory more than or equal to maximum constrained stress, then the random length structure is not established the shrinkage joint and is not also ftractureed, but the tensile strength of concrete material is very low, poor toughness, and in knot hard process, produce contraction, therefore, concrete structure, especially Overlong Concrete Structure easily produce the crack.Theory and practice all proves, if do not take measures, is difficult to satisfy the requirement of concrete specification to structural cracks.
In the prior art, a kind ofly reduce that the job practices in crack is that the ater-casting effectively is set in the concrete structure, but, the ater-casting is set prolongs the duration, in addition, reinforcing bar is had no progeny takes, welds and clear up the cutter hair and all bring certain trouble to the joint filling construction, handles badly will stay hidden leakage defect, this be engineering that waterproof requirement is arranged such as basement unallowed.
The another kind of job practices that reduces crack in the concrete structure is to use expansive concrete, and the expansive concrete unit price is higher, and for the big engineering of amount, economy is relatively poor, and is also inadvisable.
Therefore, attempting finding out a kind of economy, reasonably to reduce the method in grade beam crack again imperative.
The utility model content
The purpose of this utility model is to provide a kind of super-long structural beam of inducing the hole that is provided with, and can effectively reduce the crack in the concrete structure, and cost is low.
To achieve the above object, the utility model provides a kind of super-long structural beam of inducing the hole that is provided with, comprise concrete, beam steel and a plurality of hole of inducing, described beam steel and a plurality of hole of inducing are arranged in the described concrete described upper surface of inducing the hole to lead to this foundation structure beam from the bottom reinforcement bars of described beam steel.
The above-mentioned super-long structural beam of inducing the hole that is provided with, wherein, described a plurality of holes of inducing are along described beam steel length direction spaced set.
The above-mentioned super-long structural beam of inducing the hole that is provided with, wherein, adjacent two to induce the spacing between the hole be 30m.
The above-mentioned super-long structural beam of inducing the hole that is provided with, wherein, the described hole of inducing is a PVC sleeve.
When making the utility model was provided with the super-long structural beam of inducing the hole, each induced hole such as same pneumostome, can reduce concrete internal-external temperature difference, and during concrete construction, stress can effectively be discharged herein, can reduce the crack in the concrete structure; Induce the hole to adopt the PVC sleeve pipe, draw materials easily, make, install all very convenient; Compare with the job practices that the ater-casting is set, making the utility model is provided with the super-long structural beam of inducing the hole and can shortens the construction period, and easy and simple to handle, and construction effect is good; Compare with the job practices of using compensation shrinkage concrete, making the utility model is provided with the super-long structural beam of inducing the hole and can reduces cost.
Description of drawings
The super-long structural beam of inducing the hole that is provided with of the present utility model is provided by following embodiment and accompanying drawing.
Fig. 1 is the vertical view that the utility model is provided with the super-long structural beam of inducing the hole.
Fig. 2～Fig. 4 makes the flow chart that the utility model is provided with the super-long structural beam of inducing the hole.
The specific embodiment
Below with reference to Fig. 1～Fig. 4 the super-long structural beam of inducing the hole that is provided with of the present utility model is described in further detail.
Referring to Fig. 4, the utility model is provided with the super-long structural beam of inducing the hole and comprises concrete 30, beam steel 10 and a plurality of hole 20 of inducing, described beam steel 10 and a plurality of hole 20 of inducing are arranged in the interior described concrete 30 described upper surface of inducing hole 20 to lead to this foundation structure beam from the bottom reinforcement bars 11 of described beam steel 10.
Referring to Fig. 1 (concrete not shown in the figures), along described beam steel 10 length directions, described a plurality of hole 20 spaced sets of inducing, adjacent two to induce the spacing L1 between the hole 20 be 30m.
The described hole 20 of inducing is circular polyvinyl chloride (Polyvinyl chloride, PVC) sleeve pipe.
The utility model is provided with the super-long structural beam of inducing the hole and has the few characteristics in crack.
Introduce the preparation method that the utility model is provided with the super-long structural beam of inducing the hole in conjunction with Fig. 2～Fig. 4:
Step 1 fixedly installs a plurality of holes 20 of inducing on the bottom reinforcement bars 11 of beam steel 10;
The described hole 20 of inducing is along beam steel 10 length direction spaced sets, and adjacent two to induce the spacing between the hole 20 be 30m;
As shown in Figure 2, described upper surface of inducing hole 20 should stretch out the foundation structure beam of pre-making, be described top end face of inducing hole 20 than the upper surface height of the pre-foundation structure beam of making (in Fig. 2, described top end face of inducing hole 20 exceeds the distance of L2 than the upper surface of the pre-foundation structure beam of making);
The described hole 20 of inducing is circular PVC sleeve pipe;
Step 2, pouring concrete 30;
At this moment, described upper surface of inducing hole 20 to stretch out the foundation structure beam, as shown in Figure 3, the described high L2 of upper surface that induces the top end face in hole 20 than foundation structure beam;
Step 3 slices off described part of inducing hole 20 to stretch out foundation structure beam upper surface, as shown in Figure 4;
At this moment, the described top end face in hole 20 and the upper surface of foundation structure beam of inducing is in the same plane.
When making the utility model was provided with the super-long structural beam of inducing the hole, each induced hole 20 as same pneumostome, can reduce concrete internal-external temperature difference, and during concrete construction, stress can effectively be discharged herein, can reduce the crack in the concrete structure.
The PVC sleeve pipe is adopted in the described hole 20 of inducing, and draws materials easily, makes, installs all very convenient.
Compare with the construction method that the post-cast strip is set, making the utility model is provided with the super-long structural beam of inducing the hole and can shortens the construction period, and easy and simple to handle, and construction effect is good.
Compare with the construction method of using compensation shrinkage concrete, making the utility model is provided with the super-long structural beam of inducing the hole and can reduces cost.
Claims (4)
1. one kind is provided with the super-long structural beam of inducing the hole, comprise concrete and be arranged on the interior beam steel of concrete, it is characterized in that, also comprise a plurality of holes of inducing, described a plurality of hole of inducing is arranged in the described concrete described upper surface of inducing the hole to lead to this foundation structure beam from the bottom reinforcement bars of described beam steel.
2. the super-long structural beam of inducing the hole that is provided with as claimed in claim 1 is characterized in that, described a plurality of holes of inducing are along described beam steel length direction spaced set.
3. the super-long structural beam of inducing the hole that is provided with as claimed in claim 2 is characterized in that, adjacent two to induce the spacing between the hole be 30m.
4. as claim 1, the 2 or 3 described super-long structural beams of inducing the hole that are provided with, it is characterized in that the described hole of inducing is a PVC sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920286204 CN201581550U (en) | 2009-12-24 | 2009-12-24 | Overlong structural beam provided with guide holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920286204 CN201581550U (en) | 2009-12-24 | 2009-12-24 | Overlong structural beam provided with guide holes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201581550U true CN201581550U (en) | 2010-09-15 |
Family
ID=42723548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920286204 Expired - Fee Related CN201581550U (en) | 2009-12-24 | 2009-12-24 | Overlong structural beam provided with guide holes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201581550U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206335A (en) * | 2019-06-17 | 2019-09-06 | 董宏波 | A kind of main structure of subway station Crack Control restorative procedure |
-
2009
- 2009-12-24 CN CN 200920286204 patent/CN201581550U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206335A (en) * | 2019-06-17 | 2019-09-06 | 董宏波 | A kind of main structure of subway station Crack Control restorative procedure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20101224 |