阅读说明：本技术 一种新型的预应力张拉方法 (Novel prestress tensioning method ) 是由 谢贵全 姜东� 马明龙 于 2021-08-25 设计创作，主要内容包括：本发明涉及发泡陶瓷板张拉技术领域,特别涉及一种新型的预应力张拉方法；包括以下步骤：发泡陶瓷板开槽、张拉工具的组装、预应力钢筋的固定、预应力钢筋的张拉、浇筑植筋胶和预应力放张。本发明通过在发泡陶瓷板上设置预应力钢筋,并且通过张拉区的张拉工具对预应力钢筋进行张拉操作,可根据实际需求设置预应力钢筋的数量,在进行张拉操作时,能够对每根预应力钢筋实施精确的预应力张拉,预应力张拉精度高；同时,本发明的张拉方法具有易于操作和安全性高的特点；另外,经张拉和放张操作后的发泡陶瓷预应力板具有较高的韧性和抗弯强度,从而改善了发泡陶瓷预应力板的结构服役表现。(The invention relates to the technical field of foamed ceramic plate tensioning, in particular to a novel prestress tensioning method; the method comprises the following steps: slotting a foamed ceramic plate, assembling a tensioning tool, fixing prestressed steel bars, tensioning the prestressed steel bars, pouring a steel bar planting adhesive and releasing the prestressed steel bars. According to the invention, the prestressed reinforcements are arranged on the foamed ceramic plate, and the tensioning operation is carried out on the prestressed reinforcements through the tensioning tool in the tensioning area, so that the number of the prestressed reinforcements can be set according to the actual requirement, and when the tensioning operation is carried out, each prestressed reinforcement can be subjected to accurate prestressed tensioning, and the prestressed tensioning precision is high; meanwhile, the tensioning method has the characteristics of easiness in operation and high safety; in addition, the foamed ceramic prestressed plate after being stretched and released has higher toughness and bending strength, thereby improving the structural service performance of the foamed ceramic prestressed plate.)

1. A novel prestress tensioning method is characterized by comprising the following steps:

(1) performing grooving treatment on a foamed ceramic plate needing to be prestressed, wherein the grooving position is arranged on the surface of the vertical surface of the foamed ceramic plate, and then the grooved ceramic plate is placed at the position of a tensioning area in a tensioning steel frame;

(2) assembling a tensioning tool on a stress area of a tensioning steel frame according to the tensioning sequence of the prestressed reinforcements, and adjusting the size;

(3) preparing the prestressed steel bar into a required length, bending out the connecting hooks at two ends, clamping the prestressed steel bar by a large clamp to ensure that the prestressed steel bar does not fall off in the tensioning process, placing the prestressed steel bar in a groove of the foamed ceramic plate, hooking two sides of the prestressed steel bar by a threaded metal hook d and a threaded metal hook c respectively, and adjusting a nut c in a fixed area of a tensioning steel frame to enable the prestressed steel bar to be in a proper state;

(4) screwing a nut a in a force application area of the tensioning steel frame, gradually applying tension to the prestressed reinforcement, reading a tension value through a dynamometer in the force application area, stopping screwing the nut a in the force application area when the preset value is reached, screwing a nut b in the force application area to enable the reading of the dynamometer in the force application area to be zero, and stopping screwing the nut b in the force application area, namely completing the prestressed tensioning of the first prestressed reinforcement;

(5) detaching the tensioning tool, assembling the tensioning tool to a second position to be tensioned, and repeating the steps (3) to (4) until all prestressed reinforcements to be tensioned are subjected to prestress tensioning;

(6) after all the prestressed reinforcements are tensioned, pouring the bar planting glue into the open groove, filling the open groove with the bar planting glue, and completely wrapping the prestressed reinforcements;

(7) and when the bonding strength of the bar planting glue exceeds 70%, performing releasing and tensioning operation on the prestressed steel bars, and completing the manufacturing of the foamed ceramic prestressed plate after the releasing and tensioning operation is completed.

2. The novel prestress tensioning method according to claim 1, wherein the tensioning steel frame is a steel structural frame, a plurality of fixing supports are arranged on the steel structural frame, the fixing supports are fixed on the ground through stainless steel bolt sets, a first channel steel is arranged inside the steel structural frame along the length direction of the steel structural frame, a second channel steel is arranged inside the steel structural frame along the width direction of the steel structural frame, the fixing area is arranged outside the left side of the steel structural frame, the tensioning area is arranged between the left side inner wall of the steel structural frame and the left side wall of the first channel steel, the stressing area is arranged between the right side wall of the first channel steel and the right side inner wall of the steel structural frame, and a plurality of mounting holes are formed in positions corresponding to the steel structural frame and the first channel steel.

3. The novel prestress tensioning method according to claim 2, wherein the tensioning tool in the stress application area comprises a nut a, a threaded metal hook a, a force gauge, a threaded metal hook b, an internally threaded sleeve, a nut b and a threaded metal hook c, one end of the threaded metal hook c is connected with the connecting hook on the prestress steel bar, the other end of the threaded metal hook c is inserted into the mounting hole in the first channel steel and is connected with the internally threaded sleeve in a threaded manner, the nut b is connected with the threaded metal hook c in a threaded manner and is arranged between the first channel steel and the internally threaded sleeve, one end of the internally threaded sleeve, far away from the threaded metal hook c, is connected with the threaded metal hook b, the threaded metal hook b is connected with one end of the force gauge, and the other end of the force gauge is connected with the threaded metal hook a, one end, far away from the dynamometer, of the metal hook a with the threads penetrates through a mounting hole in the steel structure frame and is in threaded connection with a nut a.

4. The novel prestressed tensioning method according to claim 2, wherein a plurality of rubber pads are placed in the tensioning area for adjusting the height and flatness of the foamed ceramic slab to be tensioned.

5. The novel prestress tensioning method as claimed in claim 2, wherein the fixing area is provided with a threaded metal hook d and a nut c, one end of the threaded metal hook d is connected with the connecting hook on the prestress steel bar, and the other end of the threaded metal hook d is inserted into the mounting hole on the first channel steel and is connected with the nut c in a threaded manner.

Technical Field

The invention relates to the technical field of foamed ceramic plate tensioning, in particular to a novel prestress tensioning method.

Background

The foamed ceramic plate has the advantages of light weight, fire resistance, heat preservation, heat insulation, easiness in processing, capability of being directly pasted, short construction period, low cost and the like, and is a current excellent novel green energy-saving environment-friendly building material.

The existing foamed ceramic plate is usually directly and independently used, but the foamed ceramic plate is fragile, poor in toughness and low in bending strength, so that the structural service performance of the foamed ceramic plate is poor.

Therefore, a novel prestress tensioning method is provided.

Disclosure of Invention

The present invention is directed to a novel pre-stress tensioning method to solve the above problems.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a novel prestress tensioning method comprises the following steps:

(1) performing grooving treatment on a foamed ceramic plate needing to be prestressed, wherein the grooving position is arranged on the surface of the vertical surface of the foamed ceramic plate, and then the grooved ceramic plate is placed at the position of a tensioning area in a tensioning steel frame;

(2) assembling a tensioning tool on a stress area of a tensioning steel frame according to the tensioning sequence of the prestressed reinforcements, and adjusting the size;

(3) preparing the prestressed steel bar into a required length, bending out the connecting hooks at two ends, clamping the prestressed steel bar by a large clamp to ensure that the prestressed steel bar does not fall off in the tensioning process, placing the prestressed steel bar in a groove of the foamed ceramic plate, hooking two sides of the prestressed steel bar by a threaded metal hook d and a threaded metal hook c respectively, and adjusting a nut c in a fixed area of a tensioning steel frame to enable the prestressed steel bar to be in a proper state;

(4) screwing a nut a in a force application area of the tensioning steel frame, gradually applying tension to the prestressed reinforcement, reading a tension value through a dynamometer in the force application area, stopping screwing the nut a in the force application area when the preset value is reached, screwing a nut b in the force application area to enable the reading of the dynamometer in the force application area to be zero, and stopping screwing the nut b in the force application area, namely completing the prestressed tensioning of the first prestressed reinforcement;

(5) detaching the tensioning tool, assembling the tensioning tool to a second position to be tensioned, and repeating the steps (3) to (4) until all prestressed reinforcements to be tensioned are subjected to prestress tensioning;

(6) after all the prestressed reinforcements are tensioned, pouring the bar planting glue into the open groove, filling the open groove with the bar planting glue, and completely wrapping the prestressed reinforcements;

(7) and when the bonding strength of the bar planting glue exceeds 70%, performing releasing and tensioning operation on the prestressed steel bars, and completing the manufacturing of the foamed ceramic prestressed plate after the releasing and tensioning operation is completed.

The tensioning device comprises a tensioning steel frame, a plurality of fixing supports are arranged on the steel structure frame, the fixing supports are fixed on the ground through stainless steel bolt groups, first channel steel is arranged in the steel structure frame along the length direction of the steel structure frame, second channel steel is arranged in the steel structure frame along the width direction of the steel structure frame, a fixing area is arranged outside the left side of the steel structure frame, the tensioning area is arranged between the left side wall of the steel structure frame and the left side wall of the first channel steel, the stressing area is arranged between the right side wall of the first channel steel and the right side inner wall of the steel structure frame, and a plurality of through mounting holes are formed in the positions corresponding to the steel structure frame and the first channel steel.

Specifically, the tensioning tool of the stress application area comprises a nut a, a threaded metal hook a, a force gauge, a threaded metal hook b, an internal thread sleeve, a nut b and a threaded metal hook c, one end of the metal hook c with the screw thread is connected with the connecting hook on the prestressed reinforcement, the other end of the metal hook c passes through the mounting hole on the first channel steel and is connected in the internal thread sleeve in a screw thread way, the threaded metal hook c is connected with a nut b in a threaded manner, the nut b is arranged between the first channel steel and the internal thread sleeve, one end of the internal thread sleeve, which is far away from the metal hook c with the thread, is connected with the metal hook b with the thread through the thread, the threaded metal hook b is connected with one end of the dynamometer, the other end of the dynamometer is connected with the threaded metal hook a, one end, far away from the dynamometer, of the metal hook a with the threads penetrates through a mounting hole in the steel structure frame and is in threaded connection with a nut a.

Specifically, a plurality of rubber cushion blocks are arranged in the tensioning area and used for adjusting the height and the flatness of the foamed ceramic plate to be tensioned.

Specifically, the fixed area is provided with a threaded metal hook d and a nut c, one end of the threaded metal hook d is connected with the connecting hook on the prestressed reinforcement, and the other end of the threaded metal hook d penetrates through the mounting hole in the first channel steel and is connected with the nut c in a threaded mode.

The invention has the beneficial effects that: according to the invention, the prestressed reinforcements are arranged on the foamed ceramic plate, and the tensioning operation is carried out on the prestressed reinforcements through the tensioning tool in the tensioning area, so that the number of the prestressed reinforcements can be set according to the actual requirement, and when the tensioning operation is carried out, each prestressed reinforcement can be subjected to accurate prestressed tensioning, and the prestressed tensioning precision is high; meanwhile, the tensioning method has the characteristics of easiness in operation and high safety; in addition, the foamed ceramic prestressed plate after being stretched and released has higher toughness and bending strength, thereby improving the structural service performance of the foamed ceramic prestressed plate.

Drawings

FIG. 1 is a top view of a tensioned steel frame according to an embodiment of the present invention;

FIG. 2 is a front view of a tensioned steel frame according to an embodiment of the present invention;

fig. 3 is a schematic view illustrating a structure in which a foamed ceramic plate is stretched according to an embodiment of the present invention;

FIG. 4 is a flowchart illustrating a pre-stress tensioning method according to an embodiment of the present invention.

Reference numerals: the method comprises the following steps of 1-steel structural framework, 2-fixed support, 3-tensioning area, 4-stressing area, 5-first channel steel, 6-second channel steel, 7-foamed ceramic plate, 8-nut a, 9-threaded metal hook a, 10-dynamometer, 11-threaded metal hook b, 12-internal thread sleeve, 13-nut b, 14-threaded metal hook c, 15-rubber cushion block, 16-threaded metal hook d and 17-nut c.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to the accompanying drawings 1-2, the tensioning steel frame is a steel structure frame 1, a plurality of fixing supports 2 are arranged on the steel structure frame 1, the fixing supports 2 are fixed on the ground through stainless steel bolt groups, first channel steel 5 is arranged inside the steel structure frame 1 along the length direction of the steel structure frame 1, second channel steel 6 is arranged inside the steel structure frame 1 along the width direction of the steel structure frame 1, a fixing area is arranged outside the left side of the steel structure frame 1, a tensioning area 3 is arranged between the inner wall of the left side of the steel structure frame 1 and the inner wall of the left side of the first channel steel 5, a stress area 4 is arranged between the right side wall of the first channel steel 5 and the inner wall of the right side of the steel structure frame 1, and a plurality of through mounting holes are formed in positions corresponding to the steel structure frame 1 and the first channel steel 5.

Furthermore, the installation hole related to the invention includes but is not limited to a long hole and a round hole, and a tensioning tool can penetrate through the installation hole.

Furthermore, the tensioning tool of the force application area 4 comprises a nut a 8, a threaded metal hook a 9, a force gauge 10, a threaded metal hook b 11, an internal threaded sleeve 12, a nut b 13 and a threaded metal hook c 14, wherein one end of the threaded metal hook c 14 is connected with a connecting hook on the prestressed reinforcement, the other end of the threaded metal hook c 14 penetrates through a mounting hole on the first channel steel 5 and is connected in the internal threaded sleeve 12 in a threaded manner, the threaded metal hook c 14 is connected with the nut b 13 in a threaded manner, the nut b 13 is arranged between the first channel steel 5 and the internal threaded sleeve 12, one end of the internal threaded sleeve 12, which is far away from the threaded metal hook c 14, is connected with the threaded metal hook b 11, the threaded metal hook b 11 is connected with one end of the force gauge 10, and the other end of the force gauge 10 is connected with the threaded metal hook a 9, one end of the threaded metal hook a 9, which is far away from the dynamometer 10, penetrates through a mounting hole in the steel structure frame 1 and is in threaded connection with a nut a 8.

Furthermore, the dynamometer 10 of the present invention can intuitively and accurately obtain the tension force, and can ensure that each prestressed reinforcement is accurately prestressed and tensioned in the tensioning process, and the prestressed tensioning precision is high.

Furthermore, a plurality of rubber cushion blocks 15 are arranged in the tensioning area 3, and are used for adjusting the height and the flatness of the foamed ceramic plate 7 to be tensioned.

Furthermore, the fixing area is provided with a threaded metal hook d 16 and a nut c 17, one end of the threaded metal hook d 16 is connected with the connecting hook on the prestressed reinforcement, and the other end of the threaded metal hook d 16 penetrates through the mounting hole in the first channel steel 5 and is in threaded connection with the nut c 17.

Further, the threaded metal hooks a 9, b 11, c 14 and d 16 of the present invention are provided with thread segments, so that they are convenient to use and screw the corresponding nuts to apply tension.

Referring to fig. 3-4, the present invention relates to a novel pre-stress tensioning method, comprising the following steps:

(1) grooving the foamed ceramic plate 7 needing to be prestressed, wherein the grooving position is arranged on the surface of the vertical surface of the foamed ceramic plate 7, the size and the number of the grooves are set according to the requirement of the matched prestressed reinforcement, and then the grooves are placed at the position of the tensioning area 3 in the tensioning steel frame;

(2) assembling a tensioning tool on a stress application area 4 of a tensioning steel frame according to the tensioning sequence of the prestressed reinforcements, and adjusting the size;

(3) preparing the prestressed steel bars into required length, bending out connecting hooks at two ends, clamping the prestressed steel bars by a large clamp to ensure that the prestressed steel bars do not fall off in the tensioning process, placing the prestressed steel bars in the grooves of the foamed ceramic plate 7, hooking the two sides of the prestressed steel bars by a threaded metal hook d 16 and a threaded metal hook c 14 respectively, and adjusting nuts c 17 in a fixed area of a tensioning steel frame to enable the prestressed steel bars to be in a proper state;

(4) screwing a nut a 8 in a stress application area 4 of the tensioning steel frame, gradually applying tension to the prestressed reinforcement, reading a tension value through a dynamometer 10 in the stress application area 4, stopping screwing the nut a 8 in the stress application area 4 when the preset value is reached, and screwing a nut b 13 in the stress application area 4 to enable the reading of the dynamometer 10 in the stress application area 4 to be zero, and stopping screwing the nut b 13 in the stress application area 4, namely completing the prestressed tensioning of the first prestressed reinforcement;

(5) detaching the tensioning tool, assembling the tensioning tool to a second position to be tensioned, and repeating the steps (3) to (4) until all prestressed reinforcements to be tensioned are subjected to prestress tensioning;

(6) after all the prestressed reinforcements are tensioned, pouring the bar planting glue into the open groove, filling the open groove with the bar planting glue, and completely wrapping the prestressed reinforcements;

(7) when the bonding strength of the bar planting glue exceeds 70%, the prestressed steel bars are subjected to releasing and tensioning operation, in the releasing and tensioning process, the same prestressed steel bars need to be simultaneously released and tensioned, and after the releasing and tensioning operation is completed, the foamed ceramic prestressed plate is manufactured.

Furthermore, the prestressed reinforcement is arranged on the surface of one vertical face of the foamed ceramic plate 7 in the prestressed tensioning method, if the toughness and the bending strength of the foamed ceramic prestressed plate in the actual engineering are higher, prestressed reinforcement can be uniformly arranged on the two large vertical faces of the foamed ceramic plate 7 to meet the actual production, when the prestressed reinforcement is required to be uniformly arranged on the two large vertical faces of the foamed ceramic plate 7, after the step (6), when the bar-planting glue does not have fluidity, the whole tensioned steel frame and the foamed ceramic plate 7 are turned over together, the steps (1) to (6) are carried out again, and then the prestressed tensioning of the other large vertical face of the foamed ceramic plate 7 is completed.

Furthermore, the prestressed reinforcements are arranged on the foamed ceramic plate 7, and the tensioning operation is carried out on the prestressed reinforcements through the tensioning tool in the tensioning area 3, so that the contraction reaction of the prestressed reinforcements can be realized on the foamed ceramic plate 7, the surface of the foamed ceramic plate 7 can reach the skin effect, and the foamed ceramic prestressed plate has better toughness and bending strength, thereby improving the structural service performance of the foamed ceramic prestressed plate.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.