CN215925635U - Monitoring warning is unsettled bracket of prestressing force for bridge - Google Patents
Monitoring warning is unsettled bracket of prestressing force for bridge Download PDFInfo
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- CN215925635U CN215925635U CN202121334754.2U CN202121334754U CN215925635U CN 215925635 U CN215925635 U CN 215925635U CN 202121334754 U CN202121334754 U CN 202121334754U CN 215925635 U CN215925635 U CN 215925635U
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Abstract
The utility model discloses a prestressed suspended bracket for a monitoring and alarming bridge, which comprises a triangular frame body, a dynamometer, a prestressed tendon penetrating through a preformed hole on a pier stud and a bracket supporting box pre-embedded at a distance below the preformed hole; the triangular frame body comprises an upper chord, a vertical rod and an inclined rod; an anchor box corresponding to the reserved hole is fixed at the inner end part of the upper chord; the vertical rod is arranged along the outer wall of the pier stud, the top of the vertical rod is connected with the inner end part of the upper chord rod, and the bottom of the vertical rod is connected with the lower end part of the diagonal rod; the lower end part of the diagonal member is inserted into the bracket supporting box, and the upper end part of the diagonal member is connected to the outer end part of the upper chord member; two ends of the prestressed tendon are inserted into the anchor box, and are anchored by a tensioning anchor backing plate after stress is applied; the dynamometer is arranged between the prestressed tendon and the tensioning anchor backing plate and is connected to the automatic data acquisition unit, and the automatic data acquisition unit is connected with the alarm. The utility model is used for the bridge beam slab template supporting structure, ensures the construction safety through automatic alarm of stress and deformation, can reduce the consumption of the material for erecting the support and quickens the construction efficiency of the support.
Description
Technical Field
The utility model relates to the technical field of construction by a support method, in particular to a prestressed suspension bracket for a monitoring alarm bridge.
Background
At present, bridge construction technology at home and abroad is mature, infrastructure construction in China is developed at a high speed positively, a full-bridge support is erected at each span position of a continuous beam in bridge support method construction, construction operations such as template installation, steel bar binding, concrete pouring, prestress tensioning and the like are carried out on the support, and the support is dismantled at one time and formed at one time after construction is completed, so that a safe and reliable template support system is selected as the most important part of a cast-in-place concrete bridge.
In municipal and highway bridge construction projects, due to complex geological and hydrological conditions and surrounding environments, the construction of a support method is still popularized, the support bearing capacity and the erection method are various, the support erection difficulty is high, and the safety risk is high. The support collapse events occur frequently every year all over the world, so that a plurality of construction safety accidents are caused, and meanwhile, the construction quality and the engineering progress are also seriously influenced.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, the present invention provides a prestressed suspended bracket for monitoring and alarming a bridge, which has the advantages of high bearing capacity of a formwork support system, small deformation, reduced material consumption, automatic alarm prompt function, full use of the current intelligent monitoring technology, prestressed construction technology, high-strength material, mature structural design and welding technology, and acceleration of construction progress and reduction of steel consumption while ensuring bridge construction quality and safety.
The technical scheme of the utility model is as follows: a prestressed suspended bracket for a monitoring and alarming bridge comprises a triangular frame body, a dynamometer, a prestressed tendon penetrating through a preformed hole on a pier stud and a bracket supporting box pre-embedded at a position a distance below the preformed hole; the triangular frame bodies are symmetrically arranged on two sides of the pier stud and comprise upper chords, vertical bars and inclined bars which form a right triangle; the upper chord is vertical to the pier column surface, and an anchor box corresponding to the preformed hole is fixed at the inner end part of the upper chord; the vertical rod is arranged along the outer wall of the pier stud, the top of the vertical rod is connected with the inner end part of the upper chord rod, and the bottom of the vertical rod is connected with the lower end part of the diagonal rod; the lower end part of the diagonal member is inserted into the bracket supporting box, and the upper end part of the diagonal member is connected to the outer end part of the upper chord member; two ends of the prestressed tendon are inserted into the anchor box, and the prestressed tendon is anchored by a tensioning anchor backing plate after stress is applied; the dynamometer is arranged between the prestressed tendons and the tensioning anchor backing plate and is connected to the automatic data acquisition unit, and the automatic data acquisition unit is connected with the alarm.
Furthermore, a web member is also arranged in the tripod body; the web member comprises a horizontal member, a vertical member and a diagonal member; the horizontal component is fixed between the vertical rod and the diagonal rod, the vertical component is fixed between the upper chord and the diagonal rod, and the diagonal member is fixed between the upper chord and the vertical rod.
Furthermore, the prestressed tendons are finish-rolled deformed steel bars.
Further, the force gauge is a vibrating wire anchor dynamometer.
Compared with the prior art, the utility model has the beneficial effects that: the prestressed suspension bracket for the intelligent monitoring and alarming bridge is used for a bridge beam slab template supporting structure, the construction safety is guaranteed through automatic alarming of stress and deformation, the consumption of support erection materials can be reduced, the support construction efficiency is accelerated, the prestressed suspension bracket for the intelligent monitoring and alarming bridge has the technical characteristics of portability, high strength, safety, repeated use for many times and wide application range, and has great use and popularization values.
Drawings
Fig. 1 is a transverse bridge upright view of the prestressed suspension bracket for the monitoring alarm bridge of the utility model.
FIG. 2 is a partial top view of a cross-bridge of the prestressed suspension bracket for a monitoring alarm bridge according to the present invention.
In the figure: 1-upper chord; 2-vertical rod; 3-a diagonal rod; 4-web member; 5-a cradle support box; 6-prestressed tendons; 7-pier stud; 8-a force gauge; 9-tensioning the anchor backing plate; 10-triangular frame body.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
In order to ensure that the template supporting system has high bearing capacity, small deformation, reduced material consumption and an automatic alarm prompting function, the current intelligent monitoring technology, the prestress construction technology, the high-strength material, the mature structural design and the welding technology are fully utilized, the construction quality and the safety of a bridge are ensured, the construction progress is accelerated, and the steel consumption is reduced, the automatic alarm prestress suspension bracket with high applicability and simple structure is provided, and the automatic alarm prestress suspension bracket has great use and popularization values.
As shown in fig. 1 and 2, the prestressed suspended bracket for monitoring and alarming a bridge of the utility model, embodiment 1 comprises a triangular frame body 10, a dynamometer 8, a prestressed tendon 6 penetrating through a preformed hole on a pier stud 7, and a bracket supporting box 5 pre-embedded at a distance below the preformed hole; the triangular frame bodies 10 are symmetrically arranged on two sides of the pier stud 7 and comprise upper chords 1, vertical rods 2 and inclined rods 3 which form a right triangle; the upper chord 1 is arranged perpendicular to the surface of the pier stud 7, and an anchor box corresponding to the preformed hole is fixed at the inner end part of the upper chord; the vertical rod 2 is arranged along the outer wall of the pier stud 7, the top of the vertical rod is connected with the inner end part of the upper chord 1, and the bottom of the vertical rod is connected with the lower end part of the diagonal rod 3; the lower end part of the diagonal member 3 is inserted into the bracket support box 5, and the upper end part is connected to the outer end part of the upper chord member 1; two ends of the prestressed tendon 6 are inserted into the anchor box, and are anchored by a tensioning anchor backing plate 9 after stress is applied; the dynamometer 8 is arranged between the prestressed tendons 6 and the tensioning anchor backing plate 9 and is connected to the automatic data acquisition unit, and the automatic data acquisition unit is connected with the alarm.
On the basis of the embodiment 1, a web member 4 is further arranged in the triangular frame body 10 of the embodiment 2; the web member 4 comprises a horizontal member, a vertical member and a diagonal member; the horizontal component is fixed in between montant 2 and the down tube 3, vertical component is fixed in between upper chord 1 and down tube 3, the bracing component is fixed in between upper chord 1 and montant 2.
The principle of the operating device is that the upper chord 1 is firmly fixed on two sides of a pier stud 7 by utilizing the prestress of finish rolling deformed steel bars to bear upper load, so that the support sinking is reduced, a stable structural system is formed by supporting through a vertical rod 2 and an inclined rod 3, a horizontal component, a vertical component and an inclined strut component are arranged in an outer side frame in an enhanced mode to form an internal reinforcing system, a bracket supporting box 6 is embedded in the bottom of the inclined rod 5, two sides of the pier stud are symmetrically tensioned, a vibrating string type anchor rod dynamometer is installed between the prestressed ribs 6 and a tensioning anchor backing plate 9, the dynamometer 7 is connected to an automatic data collector, the automatic data collector is connected with an alarm, when the monitoring data changes, alarm information is sent out, and a stable, light, high-bearing and automatic monitoring alarm suspended prestressed bracket is formed.
Each structural component is machined in a customized manner in a steel structure machining field, a tower crane or a crane is adopted for hoisting during installation, manual auxiliary installation is carried out, and a front clamping type jack applies prestress. And reserving a finish rolling deformed steel bar through hole during pouring of concrete of the pier stud 7, and embedding the bracket supporting box 5.
Each supporting component is welded by adopting an A3 steel plate, the prestressed tendon 6 is made of finish-rolled deformed steel bar, the bracket mainly comprises three parts, a first part top prestressed system and an automatic monitoring and alarming system, a second part lower part counter-force support, and a third part suspended inner and outer double-layer triangular frame body.
The prestressed tendons 6 of the first part are penetrated in the preformed holes of the pier stud by 4 pieces of finish-rolled deformed steel bar with diameter of 32mm, and the details are shown in figure 2. The special tensioning anchor backing plate 9 and the anchor box are processed and manufactured, vibrating string type anchor rod dynamometers are respectively installed on two sides of the lower opposite pulling end of the tensioning anchor backing plate 9, the dynamometer 7 is connected with a reading meter, the reading meter is provided with alarm data, and an alarm is automatically started after the data reaches an alarm value.
The second part lower reaction force support is composed of a pre-embedded bracket supporting box 5, 4M 22 × 80mm pre-embedded bolts and a bracket connecting piece, and the bracket pre-embedded box.
The third part is a suspended inner and outer double-layer triangular frame body which consists of an upper chord member, an inclined rod, a vertical rod and a web member, wherein a main rod member is formed by welding steel plates in a combined mode to form a closed box-shaped cross section so as to increase rigidity and bearing capacity, and a local reinforcing section is formed by welding an inner box-shaped cross section and an outer box-shaped cross section through steel plates.
Each component needs to be customized and processed in a factory according to a CAD edition, after a finished product is manufactured, welding seams and sizes of the component are checked before the component leaves the factory, the component is transported to a construction site after being checked to be qualified, a pier column preformed hole and an embedded bracket supporting box 5 need to be checked and installed before pier column concrete is poured, after the strength of pier concrete meets requirements, a hoisting device is used for installing prestressed steel bars in the pier preformed hole, one end of the prestressed steel bars is temporarily fixed, one end of the prestressed steel bars is installed with an assembly type bracket, a vibrating string type anchor rod dynamometer is installed before the bracket is fixed by four bolts, the dynamometer is connected with an automatic data collector, the collector is connected with an alarm, after an automatic alarm monitoring device is installed, the other bracket is symmetrically installed, after the installation is in place, a center-penetrating jack is used for prestress tensioning and anchoring, meanwhile, preliminary data is collected, an alarm interval is set, two levels are set, and a first level yellow flicker alarm is given, personnel in the bracket operation range do not evacuate, managers check reasons, alarm is relieved after safety is confirmed, the second-level red twinkle is carried out, the whole operation is stopped, the managers check hidden dangers, and alarm is relieved after the hidden dangers are eliminated; and after all the brackets are installed, the upper temporary system is loaded, and the brackets are disassembled symmetrically according to the sequence from top to bottom, so that the brackets can be repeatedly used and are not influenced by the diameter of the pier stud. The construction efficiency and the safety of the temporary support are greatly improved.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.
Claims (4)
1. A prestressed suspended bracket for a monitoring and alarming bridge is characterized by comprising a triangular frame body (10), a dynamometer (8), a prestressed tendon (6) penetrating through a preformed hole in a pier stud (7), and a bracket supporting box (5) pre-buried at a distance below the preformed hole; the triangular frame bodies (10) are symmetrically arranged on two sides of the pier stud (7) and comprise upper chords (1), vertical rods (2) and inclined rods (3) which form a right-angled triangle; the upper chord (1) is vertical to the surface of the pier stud (7), and an anchor box corresponding to the preformed hole is fixed at the inner end part of the upper chord; the vertical rod (2) is arranged along the outer wall of the pier stud (7), the top of the vertical rod is connected with the inner end part of the upper chord (1), and the bottom of the vertical rod is connected with the lower end part of the diagonal rod (3); the lower end part of the diagonal rod (3) is inserted into the bracket supporting box (5), and the upper end part is connected to the outer end part of the upper chord (1); two ends of the prestressed tendon (6) are inserted into the anchor box, and are anchored by a tensioning anchor backing plate (9) after stress is applied; the dynamometer (8) is arranged between the prestressed tendon (6) and the tensioning anchor backing plate (9) and is connected to the automatic data acquisition unit, and the automatic data acquisition unit is connected with the alarm.
2. The prestressed suspension bracket for the monitoring and alarming bridge as claimed in claim 1, wherein a web member (4) is further arranged in the triangular frame body (10); the web member (4) comprises a horizontal member, a vertical member and a diagonal member; the horizontal component is fixed in between montant (2) and down tube (3), vertical component is fixed in between upper chord (1) and down tube (3), the bracing component is fixed in between upper chord (1) and montant (2).
3. The prestressed suspension bracket for the monitoring and alarming bridge of claim 1, wherein the prestressed tendons (6) are finish-rolled deformed steel bars.
4. The prestressed suspended bracket for monitoring and alarming bridges of claim 1, wherein said load cell (8) is a vibrating wire anchor load cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121334754.2U CN215925635U (en) | 2021-06-16 | 2021-06-16 | Monitoring warning is unsettled bracket of prestressing force for bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121334754.2U CN215925635U (en) | 2021-06-16 | 2021-06-16 | Monitoring warning is unsettled bracket of prestressing force for bridge |
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| CN215925635U true CN215925635U (en) | 2022-03-01 |
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| CN202121334754.2U Active CN215925635U (en) | 2021-06-16 | 2021-06-16 | Monitoring warning is unsettled bracket of prestressing force for bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114961318A (en) * | 2022-05-20 | 2022-08-30 | 张阳 | Symmetrical reverse anchoring reinforcing structure and construction method for first-layer beam of bottom-frame brick-concrete building |
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2021
- 2021-06-16 CN CN202121334754.2U patent/CN215925635U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114961318A (en) * | 2022-05-20 | 2022-08-30 | 张阳 | Symmetrical reverse anchoring reinforcing structure and construction method for first-layer beam of bottom-frame brick-concrete building |
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