阅读说明：本技术 厚筏板的钢筋结构及其逆作施工方法 (Steel bar structure of thick raft and reverse construction method thereof ) 是由 梁月利 郭伟 何震华 郭青云 于 2020-03-30 设计创作，主要内容包括：本发明提供了一种厚筏板的钢筋结构及其逆作施工方法,厚筏板的钢筋结构由多根筏板面筋、多根筏板底筋、多道箍筋和支承架组成,其中,所述支承架安装于筏板垫层上,多根所述筏板面筋铺设于所述支承架上,多道所述箍筋套设于同向设置的多根所述筏板面筋,多道所述箍筋的上部挂设于多根所述筏板面筋,多根所述筏板底筋穿设于多道所述箍筋中,多道所述箍筋的下部支撑于多根所述筏板底筋,所述筏板底筋固定连接于所述箍筋的下部,所述筏板面筋固定连接于所述箍筋的上部。本发明解决了传统的厚筏板钢材用量大,成本高的问题。(The invention provides a steel bar structure of a thick raft and a reverse construction method thereof, wherein the steel bar structure of the thick raft comprises a plurality of raft gluten, a plurality of raft bottom ribs, a plurality of stirrups and a support frame, the support frame is arranged on the raft bedding course, the plurality of raft gluten is laid on the support frame, the plurality of stirrups are sleeved on the plurality of raft gluten arranged in the same direction, the plurality of raft gluten are hung on the upper part of the plurality of stirrups, the plurality of raft bottom ribs are arranged in the plurality of stirrups in a penetrating manner, the lower parts of the plurality of stirrups are supported on the plurality of raft bottom ribs, the raft bottom ribs are fixedly connected to the lower parts of the stirrups, and the raft gluten is fixedly connected to the upper parts of the stirrups. The invention solves the problems of large steel consumption and high cost of the traditional thick raft.)

1. The reverse construction method of the steel bar structure of the thick raft is characterized by comprising the following steps of:

mounting a support frame on the raft cushion layer, wherein the height of the support frame is adapted to the mounting height of the raft gluten;

laying a plurality of the raft gluten on the support frame;

sleeving a plurality of stirrups on the raft gluten frames arranged in the same direction, wherein the heights of the stirrups are adapted to the distance between the raft gluten frames and the raft bottom ribs, so that the upper parts of the plurality of stirrups are hung on the plurality of raft gluten frames;

penetrating a plurality of raft bottom ribs into a plurality of hooping ribs, so that the lower parts of the plurality of hooping ribs are supported on the plurality of raft bottom ribs;

and binding and fixing the raft bottom ribs and the lower parts of the stirrups, and binding and fixing the raft gluten and the upper parts of the stirrups to form the steel bar structure of the thick raft.

2. The reverse construction method of the steel bar structure of the thick raft according to claim 1, wherein two raft gluten and two raft bottom bars are arranged in each hoop.

3. The reverse construction method of the steel bar structure of the thick raft according to claim 1, wherein the raft gluten comprises first steel bars arranged along a first horizontal direction and second steel bars arranged along a second horizontal direction.

4. The reverse construction method of the steel bar structure of the thick raft, according to claim 3, wherein the raft bottom bars include third steel bars disposed along the first horizontal direction and fourth steel bars disposed along the second horizontal direction, the first steel bars corresponding to the third steel bars, and the second steel bars corresponding to the fourth steel bars.

5. The utility model provides a steel bar structure of thick raft, its characterized in that, steel bar structure of thick raft comprises many raft gluten, many raft base muscle, multichannel stirrup and supporting rack, wherein, the supporting rack is installed on the raft bed course, many raft gluten is laid on the supporting rack, multichannel the many of syntropy setting are located to the stirrup cover raft gluten, multichannel many are hung on the upper portion of stirrup locate many raft gluten, many the multichannel is worn to locate by raft base muscle in the stirrup, multichannel the lower part of stirrup supports in many raft base muscle, raft base muscle fixed connection in the lower part of stirrup, raft gluten fixed connection in the upper portion of stirrup.

6. A reinforced structure for thick rafts according to claim 5, wherein two said raft gluten and two said raft bottom tendons are provided through each said stirrup.

7. A steel reinforcement structure for a thick raft according to claim 5, wherein the raft gluten comprises first steel reinforcements arranged in a first horizontal direction and second steel reinforcements arranged in a second horizontal direction.

8. The rebar structure of a thick raft in accordance with claim 7, wherein the raft bottom rebar comprises a third rebar disposed along the first horizontal direction and a fourth rebar disposed along the second horizontal direction, the first rebar being positioned to correspond to the third rebar and the second rebar being positioned to correspond to the fourth rebar.

Technical Field

The invention relates to the technical field of building construction, in particular to a steel bar structure of a thick raft plate and a reverse construction method thereof.

Background

With the rise of super high-rise buildings, the raft (bottom plate) of the buildings becomes thicker and thicker, the local part reaches 3 m-7 m, and the number of reinforcement layers of the raft (bottom plate) is more and more. With the design thickness of the raft being larger and larger, the raft reinforcing steel bars are arranged more uniquely and densely. Especially when raft (bottom plate) adopts the pile foundation, in order to reduce the inhomogeneous settlement of building, improve whole atress, raft (bottom plate) except dispose end muscle, gluten, anti-crack distribution muscle, still need arrange the hidden beam arrangement muscle in the middle part of raft (bottom plate), transmit the superstructure to the power of raft (bottom plate), evenly transmit each stake through raft (bottom plate), reduce raft (bottom plate) because the atress is uneven to appear subsiding inequality, adverse effect such as fracture.

Conventional raft reinforcing bar is arranged and is mostly split the distribution muscle of splitting in multilayer gluten, end muscle and centre, and the hidden beam reinforcing bar generally includes gluten, end muscle, stirrup again, so, traditional thick raft steel quantity is big, and is with high costs.

Disclosure of Invention

In order to overcome the defects in the prior art, a steel bar structure of a thick raft and a reverse construction method thereof are provided, so as to solve the problems of large steel consumption and high cost of the traditional thick raft.

In order to realize the purpose, the reverse construction method of the steel bar structure of the thick raft plate comprises the following steps:

mounting a support frame on the raft cushion layer, wherein the height of the support frame is adapted to the mounting height of the raft gluten;

laying a plurality of the raft gluten on the support frame;

sleeving a plurality of stirrups on the raft gluten frames arranged in the same direction, wherein the heights of the stirrups are adapted to the distance between the raft gluten frames and the raft bottom ribs, so that the upper parts of the plurality of stirrups are hung on the plurality of raft gluten frames;

penetrating a plurality of raft bottom ribs into a plurality of hooping ribs, so that the lower parts of the plurality of hooping ribs are supported on the plurality of raft bottom ribs;

and binding and fixing the raft bottom ribs and the lower parts of the stirrups, and binding and fixing the raft gluten and the upper parts of the stirrups to form the steel bar structure of the thick raft.

Furthermore, each hoop is provided with two raft gluten and two raft bottom ribs in a penetrating manner.

Further, raft gluten includes the first reinforcing bar that sets up along first horizontal direction and the second reinforcing bar that sets up along the second horizontal direction.

Further, raft board end muscle includes along the third reinforcing bar that first horizontal direction set up and along the fourth reinforcing bar that second horizontal direction set up, the position of first reinforcing bar corresponds to the third reinforcing bar, the position of second reinforcing bar corresponds to the fourth reinforcing bar.

The invention provides a steel bar structure of a thick raft, which consists of a plurality of raft gluten, a plurality of raft bottom ribs, a plurality of stirrups and a support frame, wherein the support frame is arranged on a raft cushion, the plurality of raft gluten is laid on the support frame, the plurality of stirrups are sleeved on the plurality of raft gluten arranged in the same direction, the plurality of raft gluten are hung on the upper parts of the plurality of stirrups, the plurality of raft bottom ribs are arranged in the plurality of stirrups in a penetrating manner, the lower parts of the plurality of stirrups are supported on the plurality of raft bottom ribs, the raft bottom ribs are fixedly connected to the lower parts of the stirrups, and the raft gluten is fixedly connected to the upper parts of the stirrups.

Furthermore, each hoop is provided with two raft gluten and two raft bottom ribs in a penetrating manner.

Further, raft gluten includes the first reinforcing bar that sets up along first horizontal direction and the second reinforcing bar that sets up along the second horizontal direction.

Further, raft board end muscle includes along the third reinforcing bar that first horizontal direction set up and along the fourth reinforcing bar that second horizontal direction set up, the position of first reinforcing bar corresponds to the third reinforcing bar, the position of second reinforcing bar corresponds to the fourth reinforcing bar.

The reverse construction method of the steel bar structure of the thick raft has the advantages that the raft gluten and the raft bottom bar are connected into a whole through the stirrups to bear force, not only is the structural design intention met, but also gluten, bottom bar, waist bar and the like additionally added to the hidden beam are saved, and the steel input is saved. Compared with the conventional thick bottom plate hidden beam design, the design method avoids increasing gluten, bottom ribs, stirrups and waist ribs of the hidden beam in the middle of the raft, or arranges multi-layer crack-resistant distribution ribs, reduces the larger amount of the steel bars, saves the economic cost, and can ensure the stress and the stability of the structure. In addition, adopt the design form of stirrup, link raft gluten and raft end muscle through the stirrup atress as an organic whole, arrange in a flexible way, whole atress is more reasonable, more is favorable to the raft to resist the adverse effect that uneven settlement brought, and the stirrup can transversely and longitudinal arrangement, has both reached the design intention, and design economy is reasonable again.

Drawings

Fig. 1 is a schematic structural view of a steel bar structure of a thick raft according to an embodiment of the present invention.

Fig. 2 to 5 are schematic diagrams of steps of a reverse construction method of a steel bar structure of a thick raft according to an embodiment of the present invention.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.

Fig. 1 is a schematic structural view (top view) of a steel bar structure of a thick raft according to an embodiment of the present invention, and fig. 2 to 5 are schematic step views of a reverse construction method of a steel bar structure of a thick raft according to an embodiment of the present invention.

Referring to fig. 1 to 5, the present invention provides a steel bar structure of a thick raft, which is composed of a plurality of raft gluten 1, a plurality of raft bottom tendons 2, a plurality of stirrups 3 and a support frame 4. In this embodiment, the thick raft is a basic raft with a thickness greater than 3m, and the local thickness of the thick raft reaches 3m to 7 m. Wherein, the support frame 4 is arranged on the raft cushion layer 5. A plurality of raft gluten 1 are laid on the support frame 4. A plurality of raft gluten 1 arranged in the same direction are sleeved with a plurality of stirrups 3. The upper parts of the plurality of stirrups 3 are hung on the plurality of raft gluten bars 1. The multiple raft bottom ribs 2 are arranged in the multiple hoops 3 in a penetrating way. The lower parts of the plurality of stirrups 3 are supported on a plurality of raft bottom ribs 2. The raft bottom rib 2 is fixedly connected with the lower part of the stirrup 3. Raft board gluten 1 fixed connection is in the upper portion of stirrup 3.

The support frame 4 comprises a plurality of cross bars and a plurality of upright bars. The pole setting is vertical to be installed on the raft bed course, and the horizontal pole is connected in adjacent horizontal pole. After the concrete strength of raft bed course reached the requirement, do not install raft bed end muscle earlier, need install the supporting rack earlier, the supporting rack can adopt following two kinds of structures: (1) the steel support is adopted, the steel support is a jig frame which is formed by welding channel steel, I-steel and angle iron in a combined mode, the distance between vertical rods can be set to be 1000-2000 mm, and the step distance between a cross rod and the vertical rods is arranged in combination with the thickness of a raft plate; (2) adopt steel pipe scaffold frame to support (the steel pipe can not the mopping), but the steel pipe must the shutoff grout, and the bottom of pole setting adopts shrouding (fritter steel sheet) welding shutoff, and the interval of pole setting can set up to 1000mm ~ 2000mm, and the stride of steel pipe combines the raft plate thickness to arrange, and the horizontal pole on top layer increases anti-skidding fastener.

In this embodiment, each hoop 3 is provided with two raft gluten 1 and two raft bottom ribs 2 corresponding to the upper and lower positions of the two raft gluten. Divide into a plurality of unit reinforcing bar groups with many raft gluten, raft end muscle on the same direction, every unit reinforcing bar group includes two raft gluten and two raft end muscle of below relevant position, and every unit reinforcing bar stack is equipped with the multichannel stirrup. In this embodiment, a plurality of unit reinforcing bar sets are continuously arranged. In some embodiments, the plurality of unit reinforcing bar groups are arranged according to the arrangement position of the hidden beam.

Raft gluten 1 includes first reinforcing bar and second reinforcing bar. The first reinforcing steel bar is arranged along the first horizontal direction, and the second reinforcing steel bar is arranged along the second horizontal direction. In this embodiment, the first rebar is perpendicular to the second rebar.

Raft plate bottom muscle 2 includes third reinforcing bar and fourth reinforcing bar. The third reinforcing bar sets up along first horizontal direction. The fourth reinforcing bar sets up along the second horizontal direction.

In this embodiment, the position of the first reinforcing bar of raft gluten corresponds to the third reinforcing bar of raft end muscle, and the position of the second reinforcing bar of raft gluten corresponds to the fourth reinforcing bar of raft end muscle.

The invention provides a reverse construction method of a steel bar structure of a thick raft plate, which comprises the following steps:

s1: and (3) mounting a support frame 4 on the raft cushion layer 5, wherein the height of the support frame 4 is adapted to the mounting height of the raft gluten 1.

The height of the supporting frame is adapted to the elevation of the gluten of the raft.

S2: a plurality of raft gluten 1 are laid on the support frame 4.

Raft board gluten 1 includes the first reinforcing bar that sets up along first horizontal direction and the second reinforcing bar that sets up along the second horizontal direction.

In this embodiment, the bottom plate of raft is provided with pile foundation 6, and the density of setting up the position and setting of stirrup can be adjusted as required. According to the arrangement of the stirrup in the drawing, the stirrup is respectively provided with two spaced raft gluten and raft bottom tendon. On the supporting rack, preferentially installing and sleeving the raft gluten of the stirrup, installing the raft gluten on the supporting rack, firstly not binding and fixing, and then installing the rest raft gluten without the stirrup after throwing away.

S3: establish multichannel stirrup 3 in the cover on many raft gluten 1 of syntropy setting, the high adaptation of stirrup 3 is in the interval between raft gluten 1 and raft base muscle 2 for many raft gluten 1 are located to the upper portion of hanging of multichannel stirrup 3.

In this embodiment, each hoop 3 is provided with two raft gluten bars 1 and two raft bottom bars 2.

Specifically, the hoop reinforcement after the processing is finished is hung in a raft construction operation area, and then the individual hoop reinforcement is sleeved on the raft gluten, so that the hoop reinforcement can be sleeved on two adjacent raft gluten only by manually opening the closing-up position of the hoop reinforcement. According to the interval of stirrup, overlap sufficient stirrup quantity back, break two gluten into two corners on the upper portion of stirrup off with the fingers and thumb, design the interval according to the stirrup and scatter the multichannel stirrup, the intersection of stirrup and raft gluten need not bundle silk ligature earlier fixedly.

S4: wear to locate in multichannel stirrup 3 with many boards end muscle 2 for the lower part of multichannel stirrup 3 supports in many raft bottom muscle 2.

Raft board end muscle 2 includes the third reinforcing bar that sets up along first horizontal direction and the fourth reinforcing bar that sets up along the second horizontal direction, and the position of first reinforcing bar corresponds to the third reinforcing bar, and the position of second reinforcing bar corresponds to the fourth reinforcing bar.

Hang the raft construction operation district to the raft base muscle after accomplishing with processing, two-way raft base muscle of artifical installation, the raft base muscle of stirrup is designed to same design, need penetrate this part raft base muscle in the multichannel stirrup, according to the trend of multichannel stirrup, penetrate to the other end of multichannel stirrup from the one end of multichannel stirrup. After the raft bottom ribs are penetrated in place, the raft bottom ribs are placed on the lower parts of the multiple hooping ribs, so that the lower parts of the multiple hooping ribs 3 are supported on the multiple raft bottom ribs 2. And binding and fixing the bottom ribs of the raft and the lower parts of the stirrups by adopting binding wires. During binding, the distance between the multiple hooping bars needs to be adjusted, and the distance between the adjacent hooping bars is ensured to meet the requirement of a drawing. The raft bottom ribs are connected by adopting conventional mechanical connection and are screwed in place.

S5: and binding and fixing the lower parts of the raft bottom ribs 2 and the stirrups 3, and binding and fixing the upper parts of the raft gluten 1 and the stirrups 3 to form a steel bar structure of the thick raft.

After raft base rib installation is accomplished, can adopt the ligature of bundle silk ligature fixed with the intersection of stirrup before with the raft gluten, the stirrup just can not shift like this. The installation of the rest of the raft gluten may then be fixed to form the steel bar structure of the thick raft.

After the installation of the steel bar structures of the thick raft is finished, the intervals, positions and the like of the stirrups are rechecked particularly by reinforcement, and after the tests and the acceptance are qualified, the pouring construction of the concrete of the thick raft can be carried out. Because the stirrup is fixed with raft gluten, raft base bar ligature, pour and vibrate and can not cause the aversion of stirrup, satisfy the designing requirement. If the thickness of the raft plate is larger, the structural steel bars can be arranged in the middle of the raft plate at intervals of 1500-2000 mm along the horizontal direction, and the integrity is better.

According to the reverse construction method of the steel bar structure of the thick raft, the raft gluten and the raft bottom bar are connected into a whole through the stirrups to bear force, so that the structural design intention is met, additionally added gluten, bottom bar, waist bar and the like of the hidden beam are saved, and the steel input is saved. Compared with the conventional thick bottom plate hidden beam design, the design method avoids increasing gluten, bottom ribs, stirrups and waist ribs of the hidden beam in the middle of the raft, or arranges multi-layer crack-resistant distribution ribs, reduces the larger amount of the steel bars, saves the economic cost, and can ensure the stress and the stability of the structure. In addition, adopt the design form of stirrup, link raft gluten and raft end muscle through the stirrup atress as an organic whole, arrange in a flexible way, whole atress is more reasonable, more is favorable to the raft to resist the adverse effect that uneven settlement brought, and the stirrup can transversely and longitudinal arrangement, has both reached the design intention, and design economy is reasonable again.

The reverse construction method of the reinforcement structure of the thick raft is adopted in the super-thick raft of the super-high-rise building, the gluten and the bottom rib of the super-thick raft form integral stress through the stirrups, the stress is uniformly transmitted to the pile foundation under the super-thick raft, the structural stress is reasonable, and the reverse construction method is particularly suitable for the part of the super-thick raft with overlarge local stress.

It should be noted that the structures, ratios, sizes, and the like shown in the drawings attached to the present specification are only used for matching the disclosure of the present specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions of the present invention, so that the present invention has no technical essence, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the invention is to be defined by the scope of the appended claims.