CN206828969U - A kind of high pier stud bearing platform counter-force prepressing device - Google Patents

Abstract

The utility model discloses a counterforce preloading device for a load-bearing platform of a high pier column. It includes: the preloading part, which is set at the preloading monitoring position of the load-bearing platform, including the bearing beams and anchors; It is a reaction force support with a sandwich structure, a hydraulic cylinder is fixed between the sandwich structures, the top surface of the upper frame is anchored to one end of the pre-embedded rod, and the pre-embedded rod passes through the bottom frame and is embedded in the bottom cap of the pier to be fixed; the upper end of the tensioned steel cable It is anchored and fixed on the upper plane of the pressure beam through anchors, and the lower end passes through the upper frame, hydraulic cylinder, and bottom frame of the reaction force frame in turn, and then is anchored and fixed with the bottom surface of the bottom frame through anchors. The preloading device of the utility model can well realize the preloading safety monitoring, the monitoring process takes less time, the monitoring preloading cost is low, the operation is convenient, and the load data can be better controlled. It is especially suitable for preload monitoring of load-bearing platforms with high pier structures.

Description

A counter force preloading device for a load-bearing platform with high pier columns

technical field

The utility model belongs to the technical field of building safety monitoring, in particular to the technical field of load-bearing platform construction safety monitoring, in particular to a counterforce preloading device for a load-bearing platform of high pier columns.

Background technique

In the construction of high pier columns, it is usually necessary to build a temporary load-bearing platform for the building. The platform is used as an auxiliary facility for the construction of high pier columns. In order to ensure the quality and safety of the construction, it is necessary to monitor the preloading of the temporary structure as the load-bearing platform.

The traditional preloading method of the load-bearing platform generally adopts heap load preloading to check the deformation and safety and stability of the load-bearing platform. There are many problems in the preloading preloading. Due to the large preloading load and the small preloading construction area, the position of the preloading preloading objects is relatively high. If there is an abnormal deformation of the platform, the unloading speed of the platform is slow, and the potential damage cannot be eliminated in time. Hazardous source, there are great safety hazards; at the same time, the high-altitude operation where the preloaded objects are frequently hoisted, the operation time is long, the efficiency is low, and the load balance control is difficult, and the preloading monitoring effect cannot meet the needs.

Contents of the invention

According to the deficiencies of the prior art, the utility model discloses a counterforce preloading device for a load-bearing platform of a high pier column. The purpose of the utility model is to provide a safer, more efficient and more accurate monitoring device which adopts the counter force preloading method to realize the inspection and monitoring of the load-bearing platform.

The utility model is realized through the following technical solutions:

The counter force preloading device of the high pier column bearing platform is characterized in that it includes a preloading part, a counter force frame part and a tension steel cable;

The preloading part is set at the preloading monitoring position of the bearing platform, including bearing beams and anchors;

The reaction force frame part is set above the pier bottom bearing platform and vertically below the preloading part, including the reaction force support with a sandwich structure formed by the upper frame and the bottom frame. A hydraulic cylinder is fixed between the sandwich structures. One end of the buried rod is anchored and fixed, and the pre-embedded rod passes through the underframe and is embedded in the pier cap;

The upper end of the tension steel cable is anchored and fixed on the upper plane of the pressure beam through anchors, and the lower end passes through the upper frame, hydraulic cylinder, and bottom frame of the reaction frame in turn, and then is anchored to the bottom surface of the bottom frame by anchors.

Further, the pressure beam includes two I-shaped steel beams arranged in parallel and steel plates welded and fixed on the upper and lower planes. There is a hole in the center of the steel plates welded and fixed on the upper and lower planes. The cable passes through the central hole of the steel plate and the middle of the two I-shaped steel beams and is anchored and fixed with the anchor. Vertical stiffeners can also be arranged between the upper and lower plane steel plates of the pressure beam.

Further, both the upper frame and the bottom frame are composed of I-shaped steel beams, and two sets of pre-embedded rods are arranged on each reaction force frame. The pre-embedded rod is detachably connected to the bottom frame through bolts.

The bottom end of the pre-embedded rod is pre-welded with transverse reinforcing ribs and embedded in the bottom cap of the pier for fixing.

Beneficiality of the utility model: the utility model provides a preloading device under simulated load conditions, which can well realize the preloading safety monitoring, the monitoring process takes less time, the monitoring preloading cost is low, the operation is convenient, and the load data can be better control. It is especially suitable for preload monitoring of load-bearing platforms with high pier structures. The utility model can simulate the load in the case of heap load preloading, and only needs a small number of operators to cooperate in the whole process of preloading, and the construction operation is convenient; compared with the heap load preloading method, the long process of load loading is eliminated, and the safety hazard is reduced; The use of materials involved in the preloading of the force frame is less, and the I-beams, steel bars and tensioning equipment that are common on the construction site are generally used to save costs.

Description of drawings

Fig. 1 is the schematic diagram of installation of the preloading device of the present utility model;

Fig. 2 is a structural schematic diagram of the preloading part of the preloading device of the present invention;

Fig. 3 is a schematic diagram of the side view structure of the counter force frame part of the preloading device of the present invention;

Fig. 4 is a schematic structural diagram of the front view of the reaction force frame part of the preloading device of the present invention.

In the figure, 1 is the preloading part, 2 is the reaction frame part, 3 is the tension steel cable, 11 is the pressure beam, 12 is the anchor, 21 is the upper frame, 22 is the bottom frame, 23 is the oil cylinder, 24 is the Embedded rod, 25 is upper anchorage, and 26 is lower anchorage.

detailed description

The utility model is specifically described below through the examples, the examples are only used to further illustrate the utility model, and can not be interpreted as limiting the protection scope of the utility model, those skilled in the art make according to the above-mentioned content of the utility model Some non-essential improvements and adjustments also belong to the protection scope of the utility model.

In conjunction with the accompanying drawings.

As shown in the figure, the reaction force preloading device of the high pier column bearing platform includes a preloading part 1, a reaction force frame part 2 and a tensioning steel cable 3.

The preloading part 1 is set at the preloading monitoring position of the load-bearing platform, including the bearing beam 11 and the anchor 12;

The reaction force frame part 2 is arranged above the pier bottom cap and vertically below the preloading part 1, and includes a reaction force support with a sandwich structure composed of an upper frame 21 and a bottom frame 22. A hydraulic cylinder 23 is fixed between the sandwich structures. The top surface of the frame 21 and one end of the embedded rod 24 are anchored and fixed, and the embedded rod 24 passes through the bottom frame 22 and is embedded in the bottom cap of the pier to be fixed;

The upper end of the tension steel cable 3 is anchored and fixed on the upper plane of the pressure beam 11 through the anchorage 12, and the lower end passes through the upper frame 21 of the reaction force frame part 2, the hydraulic cylinder 23, and the bottom frame 22, and then passes through the lower anchorage 26 and the bottom frame. The bottom surface of frame 22 is anchored and fixed.

The pressure beam 11 includes two I-shaped steel beams arranged in parallel and steel plates welded and fixed on the upper and lower planes. There is a hole in the center of the steel plates welded and fixed on the upper and lower planes. 3. Go through the central hole of the steel plate and the middle of the two I-beams and fix it with the anchor 12. Vertical stiffeners can also be arranged between the upper and lower plane steel plates of the pressure beam.

Both the upper frame 21 and the bottom frame 22 are made of I-shaped steel beams, and two groups of embedded rods 24 are arranged on each reaction force frame.

The pre-embedded rod 24 is detachably connected with the underframe 22 through bolts.

The bottom end of the pre-embedded rod 24 is pre-welded with transverse reinforcing ribs and embedded in the bottom cap of the pier for fixing.

Installation of the device: use the tower crane to cooperate with manual installation from top to bottom. First, determine the installation location of the preloading part 1 according to the force on site, and hoist it to the construction temporary load-bearing platform by tower crane, and then install the pressure beam 11, anchorage 12 and tension steel cable 3. The upper end of the tension steel cable 3 is locked by the anchorage 12, and the lower end freely hangs down to the platform below.

The pre-embedded and consolidated pre-embedded rods 24 are pre-embedded when pouring the lower pier cap, and the utility model uses two sets of pre-embedded rods 24 to connect a reaction force frame part 2 structure; Underframe 22, oil cylinder 23, and upper frame 21 are installed on the bar 24, wherein the underframe 22 is connected with the embedded rod 24 with detachable bolts, and the top surface of the upper frame 21 is anchored and fixed with the upper anchor 25 and the embedded rod 24.

After the tension steel cable 3 passes through the upper frame 21 and the oil cylinder 23, it is locked on the lower surface of the underframe 22 by the lower anchor 26. The oil pump is connected with the oil cylinder 23, and the installation of the counter force preloading device of a certain high pier column temporary load-bearing platform has been completed.

When monitoring applications: Unlock the fixing bolts connecting the bottom frame 22 and the embedded rod 24, the upper frame 21 is in the anchored state, the oil cylinder 23 does not produce any displacement when the force is applied, and the bottom frame 22 is allowed to move downward. After the above operations are completed, the oil cylinder 23 is opened to apply a load to the counter force frame part 2 to achieve the purpose of preloading.

Claims (6)

1. A kind of 1. high pier stud bearing platform counter-force prepressing device, it is characterised in that：Including pre- splenium, reaction frame portion and tensioning steel Cable；

   Pre- splenium, it is arranged at bearing platform precompressed monitoring position, including strut beam and anchorage；

   Reaction frame portion, it is arranged above pier bottom cushion cap, the vertical lower section of pre- splenium, including sandwich is formed by upper bed rack and chassis Counter-force support, hydraulic jack is fixed between sandwich, upper strata top of support is fixed with the anchoring of pre-buried bar one end, and pre-buried bar is worn Cross chassis and be embedded in fixation in pier bottom cushion cap；

   With being fixed on plane on strut beam by anchorage, lower end sequentially passes through the upper strata in reaction frame portion for tensioning wirerope upper end Fixed after frame, hydraulic jack, chassis by anchorage and the anchoring of chassis bottom surface.
2. 2. high pier stud bearing platform counter-force prepressing device according to claim 1, it is characterised in that：The strut beam includes The steel plate that two steel I-beams be arrangeding in parallel and upper and lower plane-welding are fixed, the steel plate center that upper and lower plane-welding is fixed have Hole, anchorage are fixed on plane steel plate surface, and tensioning wirerope anchors through steel plate centre bore and two steel I-beams centre with anchorage It is fixed.
3. 3. high pier stud bearing platform counter-force prepressing device according to claim 2, it is characterised in that：On the strut beam, There is the reinforcement being vertically arranged between lower plane steel plate.
4. 4. high pier stud bearing platform counter-force prepressing device according to claim 1, it is characterised in that：The upper bed rack and bottom Frame is formed by steel I-beam, and each reaction frame portion sets two groups of pre-buried bars.
5. 5. high pier stud bearing platform counter-force prepressing device according to claim 4, it is characterised in that：The pre-buried bar and bottom Frame passes through the separable connection of bolt.
6. 6. high pier stud bearing platform counter-force prepressing device according to claim 1, it is characterised in that：The pre-buried bar bottom It is pre- to be welded with cross reinforcing and be embedded in pier bottom cushion cap fixed.