Wet joint guardrail structure
By setting up guardrails with tracks and concrete detection structures on both sides of the wet joint, the problems of time-consuming guardrail displacement and inaccurate settlement difference detection are solved. The convenient displacement of the guardrail and accurate monitoring of the settlement difference are achieved, ensuring the scientific nature and safety of wet joint construction.
Patent Information
- Application Number
- CN202422703950.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-11-06
AI Technical Summary
The existing guardrails are time-consuming to shift during wet joint construction and cannot effectively detect concrete settlement differences, resulting in inaccurate construction timing and affecting construction quality and safety.
A wet joint guardrail structure is designed, which includes tracks set on the reinforced concrete slabs on both sides of the joint. The guardrail is equipped with running wheels and a concrete detection structure. The settlement difference of concrete is monitored using tension and pressure sensors and a bending moment elimination structure. The relative displacement is reflected by the force change to ensure the accuracy of the wet joint construction timing.
It realizes the convenient displacement of guardrails and accurate detection of concrete settlement differences, reduces the difficulty of monitoring, ensures the scientific timing of wet joint construction, and improves construction efficiency and safety.
Smart Images
Figure CN223343737U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of construction engineering, in particular to a wet joint guardrail structure. Background Art
[0002] In concrete structures such as bridges, slabs, walls, and beams, the overall structure is sometimes divided into multiple sections, connected by wet joints to eliminate cracks caused by uneven settlement and concrete shrinkage. Before concrete pouring, wet joints represent significant gaps within the building, significantly impacting safety. Therefore, guardrails are required for protection and isolation. Existing guardrails are typically removed and reinstalled at the next wet joint during segmented construction of long wet joints, but this method is time-consuming. Furthermore, the timing of pouring wet joint concrete is crucial. Traditionally, concrete pouring is performed only after the daily differential settlement (vertical displacement) of the structures on either side of the wet joint approaches zero and concrete shrinkage has completed, thus consolidating the structure. Therefore, during construction, the settlement of the structures (concrete) on both sides of the wet joint must be monitored to analyze the differential settlement and inform the timing of pouring. However, even when using this method to select the right time for wet joint construction, cracks may still appear within the beams and slabs of the main structure. There are many reasons for this. First, the construction site environment is complex, and the settlement monitoring of the structure is often greatly disturbed by the construction, resulting in a large monitoring workload and inaccurate data, which has an adverse impact on the selection of the timing for wet joint construction. Second, factors such as temperature changes and concrete shrinkage have led to the lack of monitoring of the relative displacement of the structures on both sides of the wet joint, and the selection of the timing for pouring the wet joint lacks data support in this regard. The relative displacement of the structures on both sides of the wet joint includes the structural settlement difference, as well as the displacement caused by factors such as temperature changes and concrete shrinkage. The size and direction of the displacement caused by various factors are difficult to determine, and it is a comprehensive relative displacement. The existing guardrails cannot complete concrete monitoring at the same time, or whether they are suitable for the construction of wet joints. Utility Model Content
[0003] The utility model aims to provide a wet joint guardrail structure which is easy to shift and can detect concrete settlement, thereby solving the problem that the existing guardrail needs to be disassembled and assembled when shifting, which is time-consuming and cannot detect concrete settlement differences.
[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technology: a wet joint guardrail structure, characterized in that it includes two tracks arranged on the reinforced concrete slab on both sides of the joint, the tracks extend along the extension direction of the joint, guardrails are provided on the tracks, and the guardrails are supported on the tracks by walking wheels. A concrete detection structure is provided between the two guardrails located on both sides of the joint, the concrete detection structure includes a tension and pressure sensor, a first bending moment elimination structure with one end connected to one end of the tension and pressure sensor, and a second bending moment elimination structure with one end connected to the other end of the tension and pressure sensor, one guardrail is connected to the other end of the first bending moment elimination structure, and the other guardrail is connected to the other end of the second bending moment elimination structure, the first bending moment elimination structure is provided with a first connecting through hole located above the reinforced concrete slab, and the second bending moment elimination structure is provided with a second connecting through hole located above the reinforced concrete slab. During use, after a section of reinforced concrete has been poured with a hinged axis, the utility model is installed for protection. A connecting pin passes through two connecting holes and presses against the concrete. A concrete detection structure checks whether the concrete has cured to the required level. Once this is achieved, concrete is poured into the joint, forming a wet joint. The guardrail is then moved on the track to the next wet joint. The concrete detection structure moves with the guardrail, eliminating the need for reinstallation when repositioning. Sensors convert displacement development into force changes, allowing the force to be monitored to reflect the magnitude of relative displacement, reducing the difficulty of monitoring. This technology is particularly advantageous when displacement is small. The sensor can directly monitor the tensile force (or compressive force) generated by the combined relative displacement of the reinforced concrete on both sides of the wet joint. When the force stabilizes, indicating that the combined relative displacement has stabilized, and the daily relative displacement increment approaches zero, the wet joint concrete can be poured.
[0005] Preferably, the first moment elimination structure includes a first connecting rod of the first moment elimination structure, one end of which is connected to the tension and pressure sensor, a ball head provided on the other end of the first connecting rod of the first moment elimination structure, and a second connecting rod of the first moment elimination structure, one end of which is spherically hinged to the ball head. The other end of the second connecting rod of the first moment elimination structure is connected to the guardrail, and a first connecting through-hole is provided in the second connecting rod of the first moment elimination structure. This structure can eliminate torque and torque generated by factors such as the solidification of reinforced concrete on one side, thereby making the measured force more accurate.
[0006] Preferably, the second bending moment elimination structure includes a first connecting rod of the second bending moment elimination structure part, one end of which is connected to the tension and pressure sensor, a second connecting rod of the second bending moment elimination structure part, two connecting plates and several intermediate connecting rods, one of the two connecting plates is connected to the other end of the first connecting rod of the second bending moment elimination structure part, and the other connecting plate is connected to one end of the second connecting rod of the second bending moment elimination structure part, the other end of the second connecting rod of the second bending moment elimination structure part is connected to the guardrail, a second connecting through hole is provided on the second connecting rod of the second bending moment elimination structure part, and the two ends of the intermediate connecting rod are correspondingly passed through the two connecting plates, and two clamping nuts for clamping the connecting plates are provided at both ends of the intermediate connecting rod, and the clamping nut and the end extending beyond the connecting plate are provided with a spherical cap section with a spherical cap surface, and the spherical surface of the spherical cap section is spherically fitted and passed through the connecting hole on the connecting plate.
[0007] Preferably, a first connecting bolt with its head facing upward is passed through the first connecting through-hole, a first connecting nut being threadedly connected to the first connecting bolt, and the first connecting nut being clamped to the first bending moment elimination structure in cooperation with the head of the first connecting bolt; and a second connecting bolt with its head facing upward is passed through the second connecting through-hole, a second connecting nut being threadedly connected to the second connecting bolt, and the second connecting nut being clamped to the head of the second connecting bolt in cooperation with the head of the second connecting bolt. This can improve the accuracy of transmitting changes in reinforced concrete to the concrete detection structure.
[0008] Beneficial effects: The entire structure can be accurately shifted during displacement; the settlement difference of concrete on both sides can be detected to easily know the timing of pouring wet joints. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a cross-sectional schematic diagram of the utility model;
[0010] Figure 2 It is a schematic diagram of the concrete detection structure;
[0011] Figure 3 for Figure 2 A local enlarged schematic diagram of point E.
[0012] In the figure: joint 1, reinforced concrete slab 2, track 3, guardrail 5, walking wheel 6, concrete detection structure 7, tension and pressure sensor 8, first bending moment elimination structure 9, second bending moment elimination structure 10, first connecting bolt 11, first connecting nut 12, head of first connecting bolt 13, second connecting bolt 14, second connecting nut 15, head of second connecting bolt 16, first connecting rod 17 of first bending moment elimination structure part, ball head 18, second connecting rod 19 of first bending moment elimination structure part, first connecting rod 20 of second bending moment elimination structure part, second connecting rod 21 of second bending moment elimination structure part, connecting plate 22, intermediate connecting rod 23, clamping nut 24, spherical crown section 25, connecting hole 26. DETAILED DESCRIPTION
[0013] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0014] See also Figures 1 to 3A wet joint guardrail structure includes two tracks 3 arranged on a reinforced concrete slab 2 on both sides of a joint opening 1, and the tracks extend along the extension direction of the joint opening. A guardrail 5 is provided on the track, and the guardrail is supported on the track by a running wheel 6. A concrete detection structure 7 is provided between the two guardrails located on both sides of the joint opening. The concrete detection structure includes a tension and pressure sensor 8, a first bending moment elimination structure 9 whose one end is connected to one end of the tension and pressure sensor, and a second bending moment elimination structure 10 whose one end is connected to the other end of the tension and pressure sensor. One guardrail is connected to the other end of the first bending moment elimination structure, and the other guardrail is connected to the other end of the second bending moment elimination structure. The first bending moment elimination structure is provided with a first connecting through hole located above the reinforced concrete slab, and the second bending moment elimination structure is provided with a second connecting through hole located above the reinforced concrete slab. A first connecting bolt 11 with its head facing upward is passed through the first connecting through hole, and a first connecting nut 12 is threadedly connected to the first connecting bolt. The first connecting nut cooperates with the head 13 of the first connecting bolt to clamp onto the first bending moment elimination structure. A second connecting bolt 14 with its head facing upward is passed through the second connecting through hole, and a second connecting nut 15 is threadedly connected to the second connecting bolt. The second connecting nut cooperates with the head 16 of the second connecting bolt to clamp onto the second bending moment elimination structure. The first bending moment elimination structure includes a first connecting rod 17 of the first bending moment elimination structure part connected to the tension and pressure sensor at one end, a ball head 18 provided on the other end of the first connecting rod of the first bending moment elimination structure, and a second connecting rod 19 of the first bending moment elimination structure part spherically hinged on the ball head at one end. The other end of the second connecting rod of the first bending moment elimination structure part is connected to the guardrail, and the first connecting through hole is provided on the second connecting rod of the first bending moment elimination structure part. The second bending moment elimination structure includes a first connecting rod 20 of the second bending moment elimination structure part, one end of which is connected to the tension and pressure sensor, a second connecting rod 21 of the second bending moment elimination structure part, two connecting plates 22 and a plurality of intermediate connecting rods 23, one of the two connecting plates is connected to the other end of the first connecting rod of the second bending moment elimination structure part, and the other connecting plate is connected to one end of the second connecting rod of the second bending moment elimination structure part, the other end of the second connecting rod of the second bending moment elimination structure part is connected to the guardrail, a second connecting through hole is provided on the second connecting rod of the second bending moment elimination structure part, and the two ends of the intermediate connecting rod are correspondingly passed through the two connecting plates, and two clamping nuts 24 for clamping the connecting plates are provided at both ends of the intermediate connecting rod, and the clamping nut and the end extending beyond the connecting plate are provided with a spherical cap section 25 with a spherical cap surface, and the spherical surface of the spherical cap section is fitted in the connecting hole 26 on the connecting plate.
[0015] During use, after a section of reinforced concrete has been poured, the utility model is installed for protection. The first and second connecting bolts are then secured into the concrete. A concrete inspection mechanism is used to check whether the concrete has met the required curing requirements. If so, concrete is poured into the joint to form a wet joint. The guardrail is then moved on the track to the next wet joint.
Claims
1. A wet joint guardrail structure, characterized in that: It includes two tracks arranged on the reinforced concrete slab on both sides of the joint, the tracks extend along the extension direction of the joint, and guardrails are provided on the tracks. The guardrails are supported on the tracks by walking wheels, and a concrete detection structure is provided between the two guardrails located on both sides of the joint. The concrete detection structure includes a tension and pressure sensor, a first bending moment elimination structure with one end connected to one end of the tension and pressure sensor, and a second bending moment elimination structure with one end connected to the other end of the tension and pressure sensor. One guardrail is connected to the other end of the first bending moment elimination structure, and the other guardrail is connected to the other end of the second bending moment elimination structure. The first bending moment elimination structure is provided with a first connecting through hole located above the reinforced concrete slab, and the second bending moment elimination structure is provided with a second connecting through hole located above the reinforced concrete slab.
2. A wet joint guardrail structure according to claim 1, characterized in that: The first bending moment elimination structure includes a first connecting rod of the first bending moment elimination structure part with one end connected to the tension and pressure sensor, a ball head arranged on the other end of the first connecting rod of the first bending moment elimination structure, and a second connecting rod of the first bending moment elimination structure part with one end spherically hinged on the ball head. The other end of the second connecting rod of the first bending moment elimination structure part is connected to the guardrail, and a first connecting through hole is arranged on the second connecting rod of the first bending moment elimination structure part.
3. A wet joint guardrail structure according to claim 1 or 2, characterized in that: The second bending moment elimination structure includes a first connecting rod of the second bending moment elimination structure part, one end of which is connected to the tension and pressure sensor, a second connecting rod of the second bending moment elimination structure part, two connecting plates and several intermediate connecting rods, one of the two connecting plates is connected to the other end of the first connecting rod of the second bending moment elimination structure part, and the other connecting plate is connected to one end of the second connecting rod of the second bending moment elimination structure part, the other end of the second connecting rod of the second bending moment elimination structure part is connected to the guardrail, a second connecting through hole is provided on the second connecting rod of the second bending moment elimination structure part, the two ends of the intermediate connecting rod are correspondingly passed through the two connecting plates, and two clamping nuts for clamping the connecting plates are provided at both ends of the intermediate connecting rod, and the clamping nut and the end extending beyond the connecting plate are provided with a spherical crown section with a spherical crown surface, and the spherical surface of the spherical crown section is spherically fitted and passed through the connecting hole on the connecting plate.
4. A wet joint guardrail structure according to claim 1 or 2, characterized in that: A first connecting bolt with its head facing upward is passed through the first connecting through hole, and the first connecting bolt is threadedly connected to a first connecting nut, and the first connecting nut cooperates with the head of the first connecting bolt to be clamped on the first bending moment elimination structure; a second connecting bolt with its head facing upward is passed through the second connecting through hole, and the second connecting bolt is threadedly connected to a second connecting nut, and the second connecting nut cooperates with the head of the second connecting bolt to be clamped on the second bending moment elimination structure.