CN210887221U - Raft foundation maintenance structure - Google Patents
Raft foundation maintenance structure Download PDFInfo
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- CN210887221U CN210887221U CN201921471629.9U CN201921471629U CN210887221U CN 210887221 U CN210887221 U CN 210887221U CN 201921471629 U CN201921471629 U CN 201921471629U CN 210887221 U CN210887221 U CN 210887221U
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Abstract
The utility model discloses a raft foundation maintenance structure, which comprises a raft foundation and is characterized in that a plastic film, a first heat preservation layer, a second heat preservation layer and a waste template are sequentially arranged on the surface of the raft foundation from bottom to top, and the waste template is fixedly connected with the raft foundation; the raft foundation is provided with a plurality of test axes, each test axis is provided with at least 4 monitoring points, each monitoring point is vertically provided with at least 3 temperature sensors along the thickness direction of the raft foundation, and all the temperature sensors at the position are electrically connected with a temperature measuring instrument at the position through sensor leads. The utility model discloses a maintenance structure, the effectual heat and the moisture loss that have reduced the concrete surface and reduce temperature gradient can carry out one structure construction down on old and useless template in short time, can guarantee the continuous building construction, and do not influence raft foundation maintenance, have shortened construction period.
Description
Technical Field
The utility model belongs to raft foundation maintenance field, concretely relates to raft foundation maintenance structure.
Background
With the rapid development of national economy and the large-scale promotion of central city construction, high-rise buildings and super high-rise buildings such as bamboo shoots in spring after rain in cities are pulled out at a glance, and particularly, the development and construction scale requirements of urban commodity houses are increased day by day. The structural foundation of the basement of the high-rise building with more than 20 floors is generally a large-volume reinforced concrete raft foundation. The raft foundation bulky concrete has large thickness of the bottom plate, more concrete sequential continuous pouring dosage, high hydration heat and the like, and is a technical key for bulky concrete construction, wherein cracks are not required to appear in design. After the large-volume concrete is poured, heat preservation, maintenance and temperature measurement are also important work. The heat preservation and maintenance period needs 15-20 days at least, which means that the next construction can be carried out at least after 15-20 days, thus the continuous construction can not be realized to a certain extent, and the construction period is prolonged.
SUMMERY OF THE UTILITY MODEL
To above-mentioned raft foundation maintenance period long, construction can not be continuous, increases construction period's problem, the utility model aims at providing a raft foundation maintenance structure can continuous building construction, shortens construction period.
The purpose of the utility model is realized through the following technical scheme.
A raft foundation maintenance structure comprises a raft foundation, wherein a plastic film, a first heat insulation layer, a second heat insulation layer and a waste template are sequentially arranged on the surface of the raft foundation from bottom to top, and the waste template is fixedly connected with the raft foundation; the raft foundation is provided with a plurality of test axes, each test axis is provided with at least 4 monitoring points, each monitoring point is vertically provided with at least 3 temperature sensors along the thickness direction of the raft foundation, and all the temperature sensors at the position are electrically connected with a temperature measuring instrument at the position through sensor leads.
Every monitoring point position sets up 3 temperature sensor, and 3 temperature sensor are located raft foundation bottom surface upside 50mm department, raft foundation middle department and raft foundation top surface downside 50mm department respectively, and temperature sensor and sensor wire are all fixed to be set up on a vertical reinforcement, and vertical reinforcement vertical fixation sets up in raft foundation.
The first heat preservation layer and the second heat preservation layer are both made of cotton felts, the cotton felts of the first heat preservation layer are uniformly staggeredly paved, the cotton felts of the second heat preservation layer are uniformly staggeredly paved, and the cotton felts of the second heat preservation layer and the cotton felts of the first heat preservation layer are vertically staggeredly paved.
The waste template is of a rectangular structure, and the waste template is vertically spliced and paved vertically and horizontally.
The utility model has the advantages that: by paving the plastic film and the heat-insulating layer, the heat and moisture loss on the surface of the concrete is effectively reduced, the temperature gradient is reduced, and surface cracks are prevented; a temperature sensor is arranged in the raft foundation, so that the temperature in the raft foundation is effectively monitored; the waste templates are laid on the heat insulation layer, and the next structural construction can be carried out on the waste templates in a short time, so that the continuous building construction can be ensured, the maintenance of the raft foundation is not influenced, and the construction period is shortened; simple structure and reasonable design, the reuse of old and useless template, low cost, used construction equipment is few.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1 is raft foundation, 2 is plastic film, 3 is first heat preservation, 4 is the second heat preservation, 5 is old and useless template, 6 is temperature sensor, 7 is the sensor wire, 8 is the thermoscope, 9 is vertical reinforcing bar.
Detailed Description
As shown in fig. 1, a raft foundation maintenance structure, including raft foundation 1, raft foundation 1 surface is from up having laid plastic film 2, first heat preservation 3, second heat preservation 4 and old and useless template 5 down in proper order, and old and useless template 5 is the rectangle structure, and old and useless template 5 is the vertical tiling of moving about freely and quickly, and old and useless template 5 and raft foundation 1 fixed connection, old and useless template 5 can prevent old and useless template 5 dislocation through screw and 1 fixed surface connection of raft foundation. Preferably, when the strength of the raft foundation 1 reaches 1.2Mpa, the waste template 5 is fixedly connected with the surface of the raft foundation 1.
The waste template 5 is a template for a building, is a temporary supporting structure, is manufactured according to design requirements, enables a concrete structure and a member to be formed according to specified positions and geometric dimensions, keeps the correct positions of the concrete structure and the member, and bears the self weight of the building template and external loads acting on the building template; the template is a bearing plate directly contacting with newly poured concrete and can be divided into a building template, a building wood-rubber plate, a film-coated plate, a multilayer plate, double-faced compound glue, a double-faced film-coated building template and the like according to the properties of materials. The utility model discloses an old and useless template 5 adopts wooden material more, and wooden template easily takes place the warpage after 3 ~ 5 times of continuous use, appears deckle edge, leads to phenomena such as rupture membrane, hourglass thick liquid can appear if continuing to use, increases the treatment cost in later stage, and consequently these templates that are not conform to the construction requirement just become for old and useless template. The processing mode of old and useless template on the building site is mostly retrieved to the mode of waste material is handled, has caused ligneous waste to a certain extent. The utility model discloses a what old and useless template 5 chooseed for use is that this kind takes place warpage, unedged wooden material template appears.
The raft foundation 1 is provided with a plurality of test axes, each test axis is provided with at least 4 monitoring point positions, each monitoring point position is vertically provided with at least 3 temperature sensors 6 along the thickness direction of the raft foundation 1, and the temperature sensors 6 at the positions are all electrically connected with a temperature measuring instrument 8 at the positions through sensor leads 7. Preferably, evenly set up 8 test axes on bulky concrete raft basis 1, test the axis and be parallel to each other between the test axis.
Preferably, every monitoring point position sets up 3 temperature sensor, and 3 temperature sensor 6 are located raft foundation 1 bottom surface upside 50mm department, raft foundation 1 middle department and raft foundation 1 top surface downside 50mm department respectively, and temperature sensor 6 and sensor wire 7 all set up on a vertical reinforcement 9, and vertical reinforcement 9 vertical fixation sets up in raft foundation 1. The temperature detector 8 can also be arranged on the vertical reinforcement 9.
Preferably, the first heat preservation layer 3 and the second heat preservation layer 4 both adopt cotton felts, the cotton felts of the first heat preservation layer 3 are uniformly staggeredly paved, the cotton felts of the second heat preservation layer 4 are uniformly staggeredly paved, and the cotton felts of the second heat preservation layer 4 and the cotton felts of the first heat preservation layer 3 are paved in a vertically staggered mode.
The utility model discloses a working process does: before construction, a temperature sensor 6, a sensor lead 7, a temperature measuring instrument 8, vertical steel bars 9, a plastic film 2, a cotton felt and a waste template 5 are prepared, wherein the waste template 5 is subjected to edge punching and straightening treatment, and burrs of the template are removed, so that the waste template 5 is of a rectangular structure.
Before raft foundation 1 concretes, weld vertical reinforcement 9 on raft foundation 1's reinforcing bar, be connected to temperature sensor 6 on sensor wire 7, then place corresponding position with temperature sensor 6 and sensor wire 7, raft foundation 1 bottom surface upside 50mm department, raft foundation 1 middle department and raft foundation 1 top surface downside 50mm department promptly, and fix temperature sensor 6 and sensor wire 7 on vertical reinforcement 9. And arranging other temperature measuring points in the same way, pouring the raft foundation 1 after the arrangement of each temperature measuring point is finished, and immediately and uniformly covering the exposed concrete surface of the raft foundation 1 with the plastic film 2 to prevent the water on the concrete surface of the raft foundation 1 from evaporating. After the concrete is secondarily plastered, pressed and collected, spraying and maintaining are carried out, the plastic film 2 is uniformly covered at the moment, when the concrete is secondarily plastered, pressed and collected, the plastic film needs to be lifted temporarily, and after the concrete is plastered, pressed and collected, the plastic film is covered immediately; then, the cotton felts of the first heat-insulating layer 3 and the second heat-insulating layer 4 are evenly staggered and covered. And splicing and laying the waste templates 5 on the second heat-insulating layer 4, and simply fixing the spliced and laid waste templates 5 after the raft foundation 1 reaches a certain concrete strength to prevent dislocation. A temperature detector 8 is connected to the other end of the sensor lead 7 and is used for temperature monitoring strictly according to the regulations. After 1-5 days, the next structure construction can be carried out, so that the raft foundation 1 and the next structure construction are carried out synchronously, and the construction period can be saved by about 15 days.
The above description is only a preferred embodiment of the present invention, and is not a limitation to the technical solution of the present invention, it should be noted that, further improvements and changes can be made by those skilled in the art on the premise of the technical solution of the present invention, and all such improvements and changes should be covered in the protection scope of the present invention.
Claims (4)
1. A raft foundation maintenance structure comprises a raft foundation and is characterized in that a plastic film, a first heat insulation layer, a second heat insulation layer and a waste template are sequentially arranged on the surface of the raft foundation from bottom to top, and the waste template is fixedly connected with the raft foundation; the raft foundation is provided with a plurality of test axes, each test axis is provided with at least 4 monitoring points, each monitoring point is vertically provided with at least 3 temperature sensors along the thickness direction of the raft foundation, and all the temperature sensors at the position are electrically connected with a temperature measuring instrument at the position through sensor leads.
2. The raft foundation curing structure of claim 1, wherein 3 temperature sensors are arranged at each monitoring point, the 3 temperature sensors are respectively positioned at 50mm above the bottom surface of the raft foundation, at the middle of the raft foundation and at 50mm below the top surface of the raft foundation, the temperature sensors and the sensor leads are fixedly arranged on a vertical steel bar, and the vertical steel bar is vertically and fixedly arranged in the raft foundation.
3. The raft foundation maintenance structure of claim 1, wherein the first and second heat preservation layers are all made of cotton felts, the cotton felts of the first heat preservation layer are uniformly and staggeredly laid, the cotton felts of the second heat preservation layer are uniformly and staggeredly laid, and the cotton felts of the second heat preservation layer and the cotton felts of the first heat preservation layer are vertically and staggeredly laid.
4. The raft foundation maintenance structure of claim 1, wherein the waste templates are rectangular structures, and the waste templates are vertically and horizontally spliced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921471629.9U CN210887221U (en) | 2019-09-05 | 2019-09-05 | Raft foundation maintenance structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921471629.9U CN210887221U (en) | 2019-09-05 | 2019-09-05 | Raft foundation maintenance structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210887221U true CN210887221U (en) | 2020-06-30 |
Family
ID=71318137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921471629.9U Active CN210887221U (en) | 2019-09-05 | 2019-09-05 | Raft foundation maintenance structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210887221U (en) |
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2019
- 2019-09-05 CN CN201921471629.9U patent/CN210887221U/en active Active
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