CN219862836U - Foundation pit beam string connecting structure - Google Patents
Foundation pit beam string connecting structure Download PDFInfo
- Publication number
- CN219862836U CN219862836U CN202320917758.6U CN202320917758U CN219862836U CN 219862836 U CN219862836 U CN 219862836U CN 202320917758 U CN202320917758 U CN 202320917758U CN 219862836 U CN219862836 U CN 219862836U
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- China
- Prior art keywords
- string
- pull rod
- foundation pit
- crown
- concrete support
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- 239000002689 soil Substances 0.000 claims abstract description 14
- 230000008093 supporting effect Effects 0.000 claims abstract description 7
- 238000009412 basement excavation Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- 238000010276 construction Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The utility model relates to a foundation pit beam-string beam connecting structure, which comprises: the crown beam, the concrete support, fixed setting is in one side that the foundation ditch was kept away from to the crown beam, the bracket, fixed setting is in one side that the concrete support was kept away from to the crown beam, open string roof beam vaulting pole, with the bracket pin joint, at least one first pull rod, the crown beam is connected to first pull rod one end, and the other end is connected open string roof beam vaulting pole, at least one second pull rod, concrete support is connected to second pull rod one end, and the other end is connected open string roof beam vaulting pole. The beam string stay bar provides supporting force through the cooperation of the concrete support, the bracket, the first pull rod and the second pull rod, and can meet the stress requirement of the beam string. Compared with the existing connection structure of the beam string, the utility model optimizes the existing upright post, and the arrangement mode of the bracket and the concrete support is not easy to form obstruction, so that the passing space of the soil slope is increased, and the utility model is beneficial to the earthwork excavation of the foundation pit.
Description
Technical Field
The utility model relates to the technical field of foundation pit steel structures, in particular to a foundation pit beam chord beam connecting structure.
Background
At present, in deep foundation pit engineering in the field of civil engineering, a steel structure truss internal support system is widely applied. Compared with the concrete inner support, the foundation pit truss inner support is convenient to mount and dismount, short in construction period and obvious in construction period advantage.
When the fully-distributed steel structure inner support of the foundation pit is used (namely, the steel structure inner support is distributed for a whole circle of the foundation pit), the earthwork excavation has a certain difficulty, because the steel support is quick in construction, good in toughness and light in self weight, but the vertical rigidity is inferior to that of a concrete beam, vehicles are difficult to pass after the steel structure inner support is fully distributed, and the road traveling crane can be directly arranged on the concrete beam unlike the concrete inner support. Therefore, a section of steel is often installed after the steel support in engineering, meanwhile, a soil slope 12 is reserved to replace the supporting effect, the steel support (beam string) is installed after most of the earthwork is excavated, and the last soil slope 12 is excavated in a vertical transportation mode. However, in the construction process, although a section of steel is supported and then installed, the upright post 11 (for erecting the support 13 to support the beam stay 24) connected with the beam string is already driven into the soil slope 12, which affects the traffic space of the soil slope 12, is unfavorable for the traffic of vehicles, affects the excavation efficiency, and the conventional installation structure of the beam string and the upright post 11 is shown in fig. 1. Meanwhile, the common steel support (beam string) occupies a larger excavation space of the foundation pit, which is unfavorable for vertical transportation.
Disclosure of Invention
The utility model aims to provide a foundation pit beam chord connection structure which can increase the passing space of a soil slope and is beneficial to the excavation of earthwork in a foundation pit on the premise of ensuring the supporting strength.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a foundation pit beam-string connection structure, comprising:
a crown beam;
the concrete support is fixedly arranged on one side of the crown beam, which is far away from the foundation pit;
the bracket is fixedly arranged on one side of the crown beam, which is far away from the concrete support;
the beam string brace rod is pivoted with the bracket;
one end of the first pull rod is connected with the crown beam, and the other end of the first pull rod is connected with the string beam stay bar;
and one end of the second pull rod is connected with the concrete support, and the other end of the second pull rod is connected with the beam string stay bar.
Preferably, the crown beam is an enclosure structure of the foundation pit.
Preferably, the crown beam, the concrete support and the bracket are integrally formed.
Preferably, pull rod supports are arranged on the crown beam, the concrete support and the beam string stay bars.
Preferably, the first pull rod is connected with the span end position of the beam string brace, and the second pull rod is connected with the span middle position of the beam string brace.
Preferably, the first pull rod and the second pull rod are both of a structure with adjustable length.
Preferably, the bracket is connected with the surface of the beam string stay rod to form an inclined surface which is inclined upwards.
Preferably, the angle between the beam stay and the soil slope is 30-40 degrees.
Preferably, the distance between every two adjacent beam string stay bars is 6-9 meters.
Preferably, the bridge further comprises a splayed brace connecting the beam stay and the crown beam.
After the scheme is adopted, the string beam brace rod provides supporting force through the cooperation of the concrete support, the bracket, the first pull rod and the second pull rod, and the stress requirement of the string beam can be met. Compared with the existing connection structure of the beam string, the utility model optimizes the upright post arranged in the soil slope, and the arrangement mode of the bracket and the concrete support is not easy to form obstruction, so that the passing space of the soil slope is increased, and the utility model is beneficial to the earthwork excavation of the foundation pit.
Drawings
Fig. 1 is a schematic view of the installation of a prior art beam string.
Fig. 2 is an elevational schematic of the present utility model.
Fig. 3 is a schematic plan view of the present utility model.
Marking:
upright posts 11, soil slopes 12 and brackets 13; crown beam 21, concrete support 22, bracket 23, beam string stay 24, first pull rod 25, second pull rod 26, inclined plane 27, pull rod support 28, splayed brace 29, beam string stay 30.
Detailed Description
As shown in fig. 2-3, the present utility model discloses a foundation pit beam-string connection structure, which includes: the support comprises a crown beam 21, a concrete support 22, brackets 23, beam string support rods 24, a first pull rod 25 and a second pull rod 26, wherein the crown beam 21 is an enclosure structure of a foundation pit, and a pull rod support 28 is arranged on the crown beam 21.
The concrete support 22, the bracket 23 and the crown beam 21 are integrally formed, wherein the concrete support 22 is arranged on one side of the crown beam 21 far away from a foundation pit, the bracket 23 is arranged on one side of the crown beam 21 far away from the concrete support 22, and the concrete support 22 and the bracket 23 are oppositely arranged. A tie bar support 28 is provided on the concrete support 22.
The beam brace 24 is pivoted with the bracket 23, and the pivoted surface of the bracket 23 and the beam brace 24 is an inclined surface 27 inclined upwards so as to facilitate the placement of the beam brace 24. A tie bar support 28 is provided at each of the span end and span center of the beam brace 24. One end of the first pull rod 25 is connected with a pull rod support 28 on the crown beam 21, and the other end is connected with the pull rod support 28 at the midspan position of the string beam stay 24. One end of the second tie rod 26 is connected with a tie rod support 28 on the concrete support 22, and the other end is connected with the tie rod support 28 at the span end position of the beam string stay 24. Preferably, the first tie rod 25 and the second tie rod 26 are each of a length-adjustable construction to facilitate in-situ adjustment of the pitch of the string stay 24. In order to facilitate the digging of the soil of the earth slope 12, the angle a=30 to 40° between the beam-string stay 24 and the earth slope 12 is preferably a=35°. In addition, in order to facilitate the passing of small and medium-sized vehicles, the spacing b=6-9 meters between every two adjacent beam braces 24 is preferable (the spacing of the beam braces 24 is generally 6-8 meters in the prior art), in order to ensure a larger spacing B, a splayed brace 29 can be arranged at the end of the beam brace 24 to connect the crown beam 21 so as to strengthen the supporting strength of the beam brace 24, at this time, the spacing C between the beam brace 30 and the crown beam 21 can also be increased, so that a larger space is formed between the beam brace and the crown beam 21, which is beneficial to the arrangement of the earthwork channel of the foundation pit and the arrangement of vertical transportation equipment.
The key point of the utility model is that the beam string stay bar 24 provides supporting force through the cooperation of the concrete support 22, the bracket 23, the first pull rod 25 and the second pull rod 26, so that the stress requirement of the beam string can be met. Compared with the existing connection structure of the beam string, the utility model optimizes the arrangement mode of the upright post 11 arranged in the soil slope 12, and the bracket 23 and the concrete support 22 are not easy to form obstruction, so that the passing space of the soil slope 12 is increased, and the utility model is beneficial to the earthwork excavation of the foundation pit.
In addition, it should be noted that the beam brace 24 modified in this case is a raising angle, but it may be determined whether all the first tie rod 25 and the second tie rod 26 are disposed according to the force calculation. In the same foundation pit, 1-3 pairs of beam strings are of the structure, and the specific number is determined according to the size of the foundation pit and the arrangement condition of an earthwork channel.
The foregoing embodiments of the present utility model are not intended to limit the technical scope of the present utility model, and therefore, any minor modifications, equivalent variations and modifications made to the above embodiments according to the technical principles of the present utility model still fall within the scope of the technical proposal of the present utility model.
Claims (10)
1. The utility model provides a foundation ditch beam-string roof beam connection structure which characterized in that includes:
a crown beam;
the concrete support is fixedly arranged on one side of the crown beam, which is far away from the foundation pit;
the bracket is fixedly arranged on one side of the crown beam, which is far away from the concrete support;
the beam string brace rod is pivoted with the bracket;
one end of the first pull rod is connected with the crown beam, and the other end of the first pull rod is connected with the string beam stay bar;
and one end of the second pull rod is connected with the concrete support, and the other end of the second pull rod is connected with the beam string stay bar.
2. The foundation pit beam-string beam connection structure according to claim 1, wherein: the crown beam is an enclosure structure of the foundation pit.
3. The foundation pit beam-string beam connection structure according to claim 1, wherein: and the crown beam, the concrete support and the bracket are integrally formed.
4. The foundation pit beam-string beam connection structure according to claim 1, wherein: and pull rod supports are arranged on the crown beam, the concrete support and the beam string stay bars.
5. The foundation pit beam-string beam connection structure according to claim 1, wherein: the first pull rod is connected with the span end position of the beam string brace rod, and the second pull rod is connected with the span middle position of the beam string brace rod.
6. The foundation pit beam-string beam connection structure according to claim 1, wherein: the first pull rod and the second pull rod are of a structure with adjustable length.
7. The foundation pit beam-string beam connection structure according to claim 1, wherein: the bracket is connected with the surface of the beam string stay bar to form an inclined surface which is inclined upwards.
8. The foundation pit beam-string beam connection structure according to claim 1, wherein: the angle between the beam string stay bar and the soil slope is 30-40 degrees.
9. The foundation pit beam-string beam connection structure according to claim 1, wherein: the distance between every two adjacent string beam supporting rods is 6-9 meters.
10. The foundation pit beam-string beam connection structure according to claim 1, wherein: the bridge also comprises a splayed brace for connecting the beam stay bars and the crown beams.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320917758.6U CN219862836U (en) | 2023-04-21 | 2023-04-21 | Foundation pit beam string connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320917758.6U CN219862836U (en) | 2023-04-21 | 2023-04-21 | Foundation pit beam string connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219862836U true CN219862836U (en) | 2023-10-20 |
Family
ID=88317123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320917758.6U Active CN219862836U (en) | 2023-04-21 | 2023-04-21 | Foundation pit beam string connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219862836U (en) |
-
2023
- 2023-04-21 CN CN202320917758.6U patent/CN219862836U/en active Active
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