CN215518842U - Multilayer reinforcing bar construction structures of different elevations of super thick raft foundation - Google Patents
Multilayer reinforcing bar construction structures of different elevations of super thick raft foundation Download PDFInfo
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- CN215518842U CN215518842U CN202121796727.7U CN202121796727U CN215518842U CN 215518842 U CN215518842 U CN 215518842U CN 202121796727 U CN202121796727 U CN 202121796727U CN 215518842 U CN215518842 U CN 215518842U
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Abstract
The utility model relates to a multi-layer steel bar construction structure of an ultra-thick raft foundation with different elevations, belonging to the technical field of raft construction; the raft comprises a main structure and a boss positioned on the lower end face of the main structure, the bottom of the raft is provided with a raft bottom rib, the top of the raft is provided with a raft top rib, a plurality of layers of distribution ribs are arranged between the raft top rib and the raft bottom rib at intervals, the raft top rib, the raft bottom rib and the distribution ribs are connected through vertically arranged truss vertical rods, a truss web member is sequentially arranged in the raft top rib, the plurality of layers of distribution ribs which are sequentially arranged and the intervals between the raft bottom ribs, the truss web members are obliquely arranged and connected with the upper layer of reinforcing steel bars and the left side truss vertical rods, the forward reinforcing steel bar structure and the lateral reinforcing steel bar structure are fixedly connected with each other to jointly form a complete reinforcing steel bar structure inside the raft, and upper layer concrete and lower layer concrete are also arranged inside the raft; solves the problem that no applicable reinforcing steel bar construction structure exists in the existing raft structure with the lower end protruding.
Description
Technical Field
The utility model belongs to the technical field of raft construction, and particularly relates to a multi-layer steel bar construction structure with different elevations for an ultra-thick raft foundation.
Background
In the existing raft structure with the lower end protruding, no applicable steel bar construction structure or construction method is provided, so that the working strength and the connection strength of the overall requirement of the raft after construction can be achieved through the steel bar construction structure in the raft under the condition of different elevations.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes the defects of the prior art and provides a multi-layer steel bar construction structure of an ultra-thick raft foundation with different elevations; the problem of do not have a suitable reinforcing bar construction structure in the proud raft structure of lower extreme at present is solved.
In order to achieve the above object, the present invention is achieved by the following technical solutions.
A multi-layer steel bar construction structure of an ultra-thick raft foundation with different elevations comprises a raft, a base, a plurality of reinforcing bars, wherein the raft comprises a main structure and bosses located on the lower end face of the main structure;
the cross section shape of the forward middle part and the cross section outline shape of the lateral middle part of the raft are both octagonal structures, and the upper part is a horizontal upper edge; two ends are respectively a vertical side; the lower part is five straight edges which are respectively a horizontal lower bottom edge at the lowest end, two sides of the lower bottom edge are respectively symmetrically provided with an oblique upward bottom edge, one end of the oblique bottom edge far away from the lower bottom edge is provided with a horizontal upper bottom edge, and one end of the upper bottom edge far away from the oblique bottom edge is respectively connected with the lower ends of the side edges at the two ends;
the reinforcing steel bar structure in the positive sectioning surface of the raft is the same as that in the lateral sectioning surface;
the steel bar structure in the section plane of the positive direction of the raft is:
the upper ends of the lower bottom edges, the inclined bottom edges at two sides and the upper bottom edges at two sides of the raft are respectively provided with raft bottom ribs parallel to the respective bottom edges;
the raft bottom ribs are installed and fixed through a truss, and the truss comprises vertical truss upright rods, horizontal distribution ribs and oblique truss web members in a sectioning surface;
the truss upright rods are arranged at intervals and are fixedly connected with raft bottom ribs at the lower ends;
a plurality of layers of distribution ribs are sequentially laid above the raft bottom ribs from top to bottom, raft top ribs parallel to the distribution ribs are arranged at the upper ends of the uppermost layer of distribution ribs, the raft top ribs are arranged at the uppermost ends in the raft, and the distribution ribs, the raft top ribs and the truss upright rods are fixedly connected;
a layer of truss web members are sequentially arranged in the intervals among the raft top ribs, the plurality of layers of distribution ribs which are sequentially arranged and the raft bottom ribs;
the positive reinforcement structure and the lateral reinforcement structure are fixedly connected with each other to form a complete reinforcement structure inside the raft;
raft inboard still is provided with upper concrete and lower floor's concrete, and lower floor's concrete sets up on the lower terminal surface of boss to be located the third layer and distribute the muscle lower part, the fixed vertical to reinforcing bar post that is provided with of up end of lower floor's concrete, upper concrete sets up in the upper portion of lower floor's concrete, and is located the outside of reinforcing bar post.
Furthermore, the centers of the lower end face of the main body structure, the upper end face of the boss and the lower end face of the boss are on the same vertical line.
Furthermore, the upper ends of the lower bottom edge and the inclined bottom edges of the two sides of the raft are respectively provided with three layers of raft bottom ribs, and the upper bottom plates of the two sides of the raft are provided with two layers of raft bottom ribs.
Furthermore, the truss upright stanchions comprise two vertical sections of truss upright stanchions and a single vertical section of truss upright stanchion, the two sections of truss upright stanchions respectively comprise an upper section of truss upright stanchion and a lower section of truss upright stanchion, the lower section of truss upright stanchion is arranged at the lower bottom edge and the upper ends of the inclined bottom edges at the two sides, and the lower ends of the truss upright stanchions are contacted with the lower bottom edge and the inclined bottom edges at the two sides; the upper end of the lower truss upright rod is fixedly connected with the lower end of the upper truss upright rod; the single-section truss upright stanchion is arranged at the upper end of the upper bottom edge, and the lower end of the single-section truss upright stanchion is contacted with the upper bottom edges of the two sides.
Furthermore, the number of the distribution ribs is three, the distribution ribs comprise a first layer of distribution ribs, a second layer of distribution ribs and a third layer of distribution ribs from top to bottom, and two ends of the third layer of distribution ribs are respectively positioned above the oblique bottom edges at two sides; the second-layer distribution ribs comprise middle-end second-layer distribution ribs and side-end second-layer distribution ribs, the side-end second-layer distribution ribs are respectively positioned at two ends of the middle-end second-layer distribution ribs and connected with the middle-end second-layer distribution ribs, and one ends, far away from the middle-end second-layer distribution ribs, of the side-end second-layer distribution ribs are respectively positioned at vertical side edges of the two ends; the two ends of the first layer of distribution ribs are respectively positioned at the vertical side edges of the two ends.
Furthermore, the raft top ribs comprise two layers of raft top ribs and a single layer of raft top rib, the single layer of raft top rib is arranged at the upper end of the uppermost layer of distribution ribs, and two ends of the single layer of raft top rib are respectively positioned above connecting points of the inclined bottom edges and the upper bottom edges of the two sides; the upper end of the single-layer raft plate top rib is provided with a double-layer raft plate top rib parallel to the single-layer raft plate top rib, and two ends of the double-layer raft plate top rib are respectively located at the vertical side edges of the two ends.
Further, the truss web members are provided with four layers, the fourth layer of truss web members are arranged between raft bottom ribs and third layer distribution ribs, the third layer of truss web members are arranged between the third layer distribution ribs and second layer distribution ribs, the second layer of truss web members are arranged between the second layer distribution ribs and first layer distribution ribs, and the first layer of truss web members are arranged between the first layer distribution ribs and raft top ribs.
Furthermore, one end of each truss web member in the fourth layer of truss web members is fixed at the joint of the raft bottom rib and the truss upright rod, and the other end of each truss web member is fixed at the joint of the third layer of distribution rib and the truss upright rod; one end of each truss web member in the third layer of truss web members is fixed at the connecting part of the third layer of distribution ribs and the truss vertical rods, and the other end of each truss web member is fixed at the connecting part of the second layer of distribution ribs and the truss vertical rods; one end of each truss web member in the second layer of truss web members is fixed at the joint of the second layer of distribution ribs and the truss upright rods, and the other end of each truss web member is fixed at the joint of the first layer of distribution ribs and the truss upright rods; one end of each truss web member in the first-layer truss web members is fixed at the joint of the first-layer distribution rib and the truss upright rod, and the other end of each truss web member is fixed at the joint of the raft top rib and the truss upright rod.
Furthermore, all the truss web members in each layer of truss web members are kept connected end to form an up-and-down wavy structure together, and the upper connecting parts of the two truss web members in the next layer of truss web members are coincided with the lower connecting parts of the two truss web members in the last layer of truss web members.
Compared with the prior art, the utility model has the following beneficial effects:
according to the multi-layer steel bar construction structure of the super-thick raft foundation with different elevations, the top and the bottom of the raft are respectively provided with the multi-layer raft top ribs and the multi-layer raft bottom ribs, so that the horizontal connection strength of the upper end and the lower end of the raft is ensured; multiple layers of distribution ribs are arranged at intervals in the middle of the interior of the raft plate, so that the connection strength of the middle part of the raft plate in the horizontal direction is ensured; truss upright rods are vertically arranged in the raft at intervals and are used for connecting raft top ribs at the upper end with raft bottom ribs at the lower end and distribution ribs of the middle layer, so that the connection strength of the raft in the vertical direction is ensured; be provided with the truss web member between raft top muscle, every layer of distribution muscle, raft end muscle, both can guarantee vertical joint strength between the upper and lower two-layer, can guarantee the joint strength between two adjacent truss pole settings simultaneously.
Drawings
The utility model is described in further detail below with reference to the accompanying drawings:
fig. 1 is a top view of a raft in the present invention;
fig. 2 is a front view of a raft in the present invention;
fig. 3 is a front partial cross-sectional view of the rafts;
FIG. 4 is an enlarged partial schematic view of FIG. 3;
FIG. 5 is a schematic view of the connection of steel skeleton columns inside the raft;
fig. 6 is a schematic view of the connection structure of the bottom ribs of the three layers of raft plates and the lower section truss vertical rods in the utility model;
fig. 7 is a schematic view of a connection structure of two layers of raft bottom ribs and single-section truss vertical rods in the utility model;
wherein, 1 is the major structure, 2 is the boss, 3 is the higher authority, 4 is the side, 5 is the lower base, 6 is oblique base, 7 is the upper base, 8 is the steel skeleton post, 9 is three-layer raft board base muscle, 10 is two-layer raft board base muscle, 11 is the lower segment truss pole setting, 12 is upper segment truss pole setting, 13 is single-section truss pole setting, 14 is third layer distribution muscle, 15 is second layer distribution muscle, 16 is first layer distribution muscle, 17 is double-layer raft board top muscle, 18 is single-layer raft board top muscle, 19 is the truss web member, 20 is lower floor concrete, 21 is upper concrete, 22 is the preweld piece.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.
As shown in fig. 1-5, the utility model provides a multi-layer steel bar construction structure of an ultra-thick raft foundation with different elevations, wherein the raft comprises a main body structure 1 and a boss 2 positioned on the lower end face of the main body structure 1.
The upper end face and the lower end face of the boss 2 are both square, the square of the lower end face is positioned right below the square of the upper end face, the side length of the square of the upper end face is larger than that of the square of the lower end face, and the square of the upper end face and the square of the lower end face are kept parallel to each other on each side. The square of the lower end face is connected with the square of the upper end face through four inclined planes, and the shapes of the four inclined planes are kept consistent.
The upper end face of the boss 2 coincides with the lower end face of the main body structure 1, and the center of the upper end face of the boss 2 coincides with the center of the lower end face of the main body structure 1. The side length of the square of the lower end surface of the main body structure 1 is larger than that of the square of the upper end surface of the boss 2, and the square of the lower end surface of the main body structure 1 and the square of the upper end surface of the boss 2 are kept parallel to each other on each side.
The side length of the main body structure 1 is 43200mm, and the thickness is 2500 mm; the side length of the upper end face of the boss 2 is 32000mm, the side length of the lower end face is 27700mm, and the thickness is 2150 mm; the total thickness of the raft plates is 4650 mm.
The cross section shape of the forward middle part and the cross section outline shape of the lateral middle part of the raft are both octagonal structures, and the upper part is a horizontal upper edge 3; two ends are respectively a vertical side 4; the lower part is five straight edges which are respectively a horizontal lower bottom edge 5 at the lowest end, two sides of the lower bottom edge are respectively symmetrically provided with an oblique upward oblique bottom edge 6, one end of the oblique bottom edge 6, far away from the lower bottom edge 5, is provided with a horizontal upper bottom edge 7, and one end of the upper bottom edge 7, far away from the oblique bottom edge 6, is respectively connected with the lower ends of the side edges 4 at the two ends. The upper edge 3, the two side edges 4, the lower bottom edge 5, the two inclined bottom edges 6 and the two upper bottom edges 7 form an octagonal cross-sectional profile shape in the middle of the raft.
The concrete steel bar construction structure inside the raft is introduced by the cutting plane in the forward middle part of the raft:
three layers of raft bottom ribs 9 which are vertically arranged and parallel to the cutting plane are respectively laid at the upper ends of the lower bottom edge 5 and the inclined bottom edges 6 at the two sides of the raft, the three layers of raft bottom ribs 9 are respectively parallel to the lower bottom edge 5 and the inclined bottom edges 6 at the two sides, the intervals between the three layers of raft bottom ribs 9 are 70mm, the distance between the lowest layer of raft bottom ribs and the lower bottom edge 5 is 70mm, and the specification of the three layers of raft bottom ribs 9 is C28.
The upper ends of the upper bottom edges 7 of the two sides of the raft are respectively paved with two layers of raft bottom ribs 10 which are vertically arranged and parallel to the cutting plane, the raft bottom ribs 10 on the two sides are parallel to the upper bottom edges 7, and the specifications of the two layers of raft bottom ribs 10 are C28.
The three layers of raft bottom ribs 9 are fixedly installed through a truss, the truss comprises two sections of vertical truss vertical rods, a single section of vertical truss vertical rod 13, three layers of horizontal distribution ribs and oblique truss web members 19 on a forward cutting plane, and the two sections of truss vertical rods respectively comprise an upper section of truss vertical rod 12 and a lower section of truss vertical rod 11.
The lower truss upright rods 11 are arranged at the upper ends of the lower bottom edge 5 and the inclined bottom edges 6 at two sides at intervals of 1500mm in the horizontal direction, and the lower ends of the lower truss upright rods are in contact with the lower bottom edge 5 and the inclined bottom edges 6 at two sides. The length of the lower truss upright post 11 is 1900mm, and the specification of the lower truss upright post 11 is C36. The raft bottom rib at the middle part of three-layer raft bottom rib 9 is located one side of lower section truss pole setting 11, the upper and lower two-layer raft bottom rib is located the other side of lower section truss pole setting 11, the corresponding position of lower section truss pole setting in both sides has pre-welded block 22 in advance, the interval in the vertical direction of three pre-welded block 22 keeps fixed, each layer of raft bottom rib in three-layer raft bottom rib 9 respectively with the pre-welded block 22 and the lower section truss pole setting 11 welded fastening of each lower section truss pole setting 11 both sides, through setting up pre-welded block 22, can guarantee that the interval in the vertical direction between each layer of raft bottom rib keeps fixed.
The upper end of each lower truss upright post 11 is fixedly connected with the lower end of the upper truss upright post 12, and the specification of the upper truss upright post 12 is C36.
The single-section truss upright rods 13 are arranged at the upper ends of the upper bottom edges 7 at intervals of 1500mm in the horizontal direction, and the lower ends of the single-section truss upright rods are in contact with the upper bottom edges 7 at two sides. The distance between the single-section truss upright rod 13 and the adjacent upper-section truss upright rod 12 is 1500 mm. The single-section truss upright 13 has the specification of C36. Two-layer raft foundation muscle 10 sets up respectively in the both ends of single section truss pole setting 13, the relevant position of the both sides of single section truss pole setting 13 has welded in advance and has welded in advance piece 22, two intervals in the vertical side of welded in advance piece 22 keep fixed, each layer of raft foundation muscle in two-layer raft foundation muscle 10 respectively with the welded in advance piece 22 and the single section truss pole setting 13 looks welded fastening of single section truss pole setting 13 both sides, through setting up welded in advance piece 22, can guarantee that the interval in the vertical side between two-layer raft foundation muscle 10 keeps fixed.
A third layer of distribution ribs 14 parallel to the three layers of raft bottom ribs 9 are laid above the three layers of raft bottom ribs 9 laid on the lower bottom edge 5, and two ends of the third layer of distribution ribs 14 are respectively positioned above the oblique bottom edges 6 on two sides. The third layer of distribution ribs 14 are respectively welded and fixed with the lower section truss upright rods 11.
The upper end of the third layer of distribution ribs 14 is provided with a second layer of distribution ribs 15 parallel to the third layer of distribution ribs, and the specification of the second layer of distribution ribs 15 is C12. The second layer of distribution ribs 15 include a middle end second layer of distribution ribs and side end second layer of distribution ribs, and the side end second layer of distribution ribs are respectively located at two ends of the middle end second layer of distribution ribs and are connected with the middle end second layer of distribution ribs. One end of the side end second layer distribution rib, which is far away from the middle end second layer distribution rib, is respectively positioned at the vertical side edges 4 at the two ends. The second layer of distribution ribs 15 are respectively welded and fixed with the upper section truss upright stanchion 12 and the single section truss upright stanchion 13.
The upper end of the second layer of distribution ribs 15 is provided with first layer of distribution ribs 16 parallel to the second layer of distribution ribs, and the specification of the first layer of distribution ribs 16 is C12. The two ends of the first layer of distribution ribs 16 are respectively positioned at the vertical side edges 4 of the two ends. The first layer of distribution ribs 16 are respectively welded and fixed with the upper section truss upright stanchion 12 and the single section truss upright stanchion 13.
The upper end of the first layer of distribution ribs 16 is provided with a single-layer raft top rib 18 parallel to the first layer of distribution ribs, and the specification of the single-layer raft top rib 18 is C28. Two ends of the top rib 18 of the single-layer raft are respectively positioned above the connection points of the inclined bottom edges 6 and the upper bottom edges 7 at two sides. The top ribs 18 of the single-layer raft are welded and fixed with the upright rods 12 of the upper section truss.
The upper end of the single-layer raft plate top rib 18 is provided with a double-layer raft plate top rib 17 parallel to the single-layer raft plate top rib, and the specification of the double-layer raft plate top rib 17 is C28. The two ends of the double-layer raft plate top rib 17 are respectively positioned at the vertical side edges 4 at the two ends. The double-layer raft plate top rib 17 is welded and fixed with the upper section truss upright stanchion 12.
The single-layer raft top rib 18 and the double-layer raft top rib 17 jointly form a raft top rib, and the raft top rib is arranged at the uppermost end of the raft and close to the upper edge 3.
The truss web members 19 are provided with four layers, and the specification of the truss web members 19 is C25. Fourth layer truss web members 19 set up between three-layer raft bottom muscle 9 and third layer distribution muscle 14, and third layer truss web members 19 set up between third layer distribution muscle 14 and second layer distribution muscle 15, and second layer truss web members 19 set up between second layer distribution muscle 15 and first layer distribution muscle 16, and first layer truss web members 19 set up between first layer distribution muscle 16 and raft top muscle.
One end of each truss web member 19 in the fourth layer of truss web members 19 is fixed at the joint of the bottom rib 9 of the three-layer raft and the lower section truss upright rod 11, and the other end is fixed at the joint of the third layer of distribution ribs 14 and the lower section truss upright rod 11.
One end of each truss web member 19 in the third layer of truss web members 19 is fixed at the joint of the third layer of distribution ribs 14 and the lower section of truss upright rods 11, and the other end is fixed at the joint of the second layer of distribution ribs 15 and the upper section of truss upright rods 12.
One end of each truss web member 19 in the second layer of truss web members 19 is fixed at the joint of the second layer of distribution ribs 15 and the upper section truss upright stanchion 12 and the single section truss upright stanchion 13, and the other end is fixed at the joint of the first layer of distribution ribs 16 and the upper section truss upright stanchion 12 and the single section truss upright stanchion 13.
One end of each truss web member 19 in the first-layer truss web members 19 is fixed at the joint of the first-layer distribution rib 16 and the upper-section truss upright stanchion 12 as well as the single-section truss upright stanchion 13, and the other end is fixed at the joint of the raft top rib and the upper-section truss upright stanchion 12 as well as the single-section truss upright stanchion 13.
All truss web members 19 in each layer of truss web members 19 are kept end to form an up-and-down undulating wave-like structure. The upper connections of the two truss webs 19 of the next truss web 19 coincide with the lower connections of the two truss webs 19 of the previous truss web 19.
The connecting structures jointly form a steel bar structure inside the cutting plane in the middle of the raft in the forward direction, and the steel bar structure inside the cutting plane at any position of the raft in the forward direction is the same as the steel bar structure inside the cutting plane in the middle. The steel bar structure inside the lateral section of the raft is the same as that inside the positive section of the raft. The positive steel bar structure and the lateral steel bar structure are welded and connected with each other to form the complete steel bar structure inside the raft plate.
The interior of the raft is also provided with upper concrete 21 and lower concrete 20, and the interior of the raft is completely filled with the lower concrete 20 and the upper concrete 21. The lower layer concrete 20 is arranged on the lower end face of the boss 2 and is positioned at the lower part of the third layer distribution rib 14, and the thickness of the lower layer concrete 20 is 900 mm.
The upper end face of the lower layer concrete 20 is fixedly provided with a vertical steel rib column 8, the lower end of the steel rib column 8 is fixedly connected with the lower layer concrete 20, and the upper end of the steel rib column 8 extends out of the upper end face of the raft plate. The number of the steel skeleton columns 8 is eight, and the eight steel skeleton columns are uniformly arranged in the range of the upper end face of the boss 2 along the circumference.
The upper concrete 21 is disposed on the upper portion of the lower concrete 20 and outside the steel skeleton column 8.
The construction steps of the raft plate internal reinforcing steel bar structure are as follows:
the first step is as follows: the construction of three layers of raft bottom ribs 9 inside the raft is firstly carried out, the three layers of raft bottom ribs 9 are arranged in the forward direction and the transverse direction, and the intervals between the three layers of raft bottom ribs 9 are fixed by pre-welding blocks.
The second step is that: after the three layers of raft bottom ribs 9 are bound, lower section truss upright posts 11 are arranged, the lower section truss upright posts 11 are arranged in the forward direction and the transverse direction, and the lower section truss upright posts 11 and the three layers of raft bottom ribs 9 are welded and fixed.
The third step: after the lower truss upright stanchion 11 is fixedly installed, the third layer of distribution ribs 14 are installed, and the third layer of distribution ribs 14 and the lower truss upright stanchion 11 are welded and fixed.
The fourth step: and after the third-layer distribution ribs 14 are fixedly installed, installing the fourth-layer truss web members 19, and fixedly welding each truss web member 19 in the fourth-layer truss web members 19 between the three-layer raft bottom ribs 9 and the third-layer distribution ribs 14 in an end-to-end manner.
The fifth step: and after the fourth layer of truss web members 19 are installed, pouring lower layer concrete 20 at the lower end of the steel reinforced column 8. After the lower layer concrete 20 at the lower end of the steel skeleton column 8 is poured, the steel bar structure forms a stable system.
And a sixth step: after the lower layer concrete 20 is poured, the upper section truss upright stanchion 12 is installed, and the upper section truss upright stanchion 12 and the lower end truss upright stanchion 11 are mutually fixed and welded. And then installing a middle-end second-layer distribution rib, and welding and fixing the middle-end second-layer distribution rib and the upper-section truss upright rod 12.
The seventh step: after the middle-end second-layer distribution ribs are fixedly installed, the third-layer truss web members 19 are installed, and each truss web member 19 in the third-layer truss web members 19 is fixedly welded between the third-layer distribution ribs 14 and the second-layer distribution ribs 15 in an end-to-end manner.
Eighth step: after the fixed mounting of the third layer truss web members 19 is completed, the two layers of raft bottom ribs 10 at the two ends are mounted, and the distance between the two layers of raft bottom ribs 10 is fixed by using the pre-welding blocks.
The ninth step: after the two layers of raft bottom ribs 10 are installed, the single-section truss upright rods 13 are installed, and the single-section truss upright rods 13 and the two layers of raft bottom ribs 10 are fixed through welding.
The tenth step: after the single-section truss upright rod 13 is fixedly installed, the second-layer distribution ribs at the two ends are installed, and the second-layer distribution ribs at the two ends and the second-layer distribution ribs at the middle end are welded and fixed with the single-section truss upright rod 13.
The eleventh step: after the second layer of distribution ribs at the side end are fixedly installed, the first layer of distribution ribs 16 are installed, and the first layer of distribution ribs 16, the single-section truss upright rods 13 and the upper-section truss upright rods 12 are welded and fixed.
The twelfth step: after the first-layer distribution ribs 16 are fixedly installed, the second-layer truss web members 19 are installed, and each truss web member 19 in the second-layer truss web members 19 is fixedly welded between the first-layer distribution ribs 16 and the second-layer distribution ribs 15 in an end-to-end manner.
The thirteenth step: after the second-layer truss web members 19 are fixedly installed, the raft top ribs are installed, and the raft top ribs, the single-section truss upright rods 13 and the upper-section truss upright rods 12 are welded and fixed.
The fourteenth step is that: after raft top rib fixed mounting is accomplished, carry out the installation of first layer truss web member 19, with every truss web member 19 in the first layer truss web member 19 end to end fixed weld between first layer distribution muscle 16 and raft top rib. And all the steel bar structures are completely installed, and the whole steel bar structure is completed.
All the steps are carried out simultaneously to mount the forward and the lateral steel bar structures.
The fifteenth step: and after the first-layer truss web members 19 are fixedly installed, pouring upper-layer concrete 21, and finishing the integral structure of the raft.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. The utility model provides a multilayer reinforcing bar construction structures of different elevations of super thick raft foundation which characterized in that: the raft plate comprises a main body structure and a boss positioned on the lower end face of the main body structure, the main body structure is a columnar structure with equal cross section, and the lower end face of the main body structure, the upper end face of the boss and the lower end face of the boss are sequentially square in a reduced proportion;
the cross section shape of the forward middle part and the cross section outline shape of the lateral middle part of the raft are both octagonal structures, and the upper part is a horizontal upper edge; two ends are respectively a vertical side; the lower part is five straight edges which are respectively a horizontal lower bottom edge at the lowest end, two sides of the lower bottom edge are respectively symmetrically provided with an oblique upward bottom edge, one end of the oblique bottom edge far away from the lower bottom edge is provided with a horizontal upper bottom edge, and one end of the upper bottom edge far away from the oblique bottom edge is respectively connected with the lower ends of the side edges at the two ends;
the reinforcing steel bar structure in the positive sectioning surface of the raft is the same as that in the lateral sectioning surface;
the steel bar structure in the section plane of the positive direction of the raft is:
the upper ends of the lower bottom edges, the inclined bottom edges at two sides and the upper bottom edges at two sides of the raft are respectively provided with raft bottom ribs parallel to the respective bottom edges;
the raft bottom ribs are installed and fixed through a truss, and the truss comprises vertical truss upright rods, horizontal distribution ribs and oblique truss web members in a sectioning surface;
the truss upright rods are arranged at intervals and are fixedly connected with raft bottom ribs at the lower ends;
a plurality of layers of distribution ribs are sequentially laid above the raft bottom ribs from top to bottom, raft top ribs parallel to the distribution ribs are arranged at the upper ends of the uppermost layer of distribution ribs, the raft top ribs are arranged at the uppermost ends in the raft, and the distribution ribs, the raft top ribs and the truss upright rods are fixedly connected;
a layer of truss web members are sequentially arranged in the intervals among the raft top ribs, the plurality of layers of distribution ribs which are sequentially arranged and the raft bottom ribs;
the positive reinforcement structure and the lateral reinforcement structure are fixedly connected with each other to form a complete reinforcement structure inside the raft;
raft inboard still is provided with upper concrete and lower floor's concrete, and lower floor's concrete sets up on the lower terminal surface of boss to be located the third layer and distribute the muscle lower part, the fixed vertical to reinforcing bar post that is provided with of up end of lower floor's concrete, upper concrete sets up in the upper portion of lower floor's concrete, and is located the outside of reinforcing bar post.
2. The multi-layer steel bar construction structure of different elevations of super-thick raft foundation of claim 1, characterized in that: the centers of the lower end face of the main body structure, the upper end face of the boss and the lower end face of the boss are on the same vertical line.
3. The multi-layer steel bar construction structure of different elevations of super-thick raft foundation of claim 1, characterized in that: the upper bottom plates of the two sides of the raft are provided with two layers of raft bottom ribs.
4. The multi-layer steel bar construction structure of different elevations of super-thick raft foundation of claim 1, characterized in that: the truss upright posts comprise two vertical truss upright posts and a single vertical truss upright post, the two truss upright posts respectively comprise an upper truss upright post and a lower truss upright post, the lower truss upright posts are arranged at the lower bottom edge and the upper ends of the inclined bottom edges at the two sides, and the lower ends of the lower truss upright posts are in contact with the lower bottom edge and the inclined bottom edges at the two sides; the upper end of the lower truss upright rod is fixedly connected with the lower end of the upper truss upright rod; the single-section truss upright stanchion is arranged at the upper end of the upper bottom edge, and the lower end of the single-section truss upright stanchion is contacted with the upper bottom edges of the two sides.
5. The multi-layer steel bar construction structure of different elevations of super-thick raft foundation of claim 1, characterized in that: the number of the distribution ribs is three, the distribution ribs comprise a first layer of distribution ribs, a second layer of distribution ribs and a third layer of distribution ribs from top to bottom, and two ends of the third layer of distribution ribs are respectively positioned above the oblique bottom edges at two sides; the second-layer distribution ribs comprise middle-end second-layer distribution ribs and side-end second-layer distribution ribs, the side-end second-layer distribution ribs are respectively positioned at two ends of the middle-end second-layer distribution ribs and connected with the middle-end second-layer distribution ribs, and one ends, far away from the middle-end second-layer distribution ribs, of the side-end second-layer distribution ribs are respectively positioned at vertical side edges of the two ends; the two ends of the first layer of distribution ribs are respectively positioned at the vertical side edges of the two ends.
6. The multi-layer steel bar construction structure of different elevations of super-thick raft foundation of claim 1, characterized in that: the raft top ribs comprise two layers of raft top ribs and a single layer of raft top rib, the single layer of raft top rib is arranged at the upper end of the uppermost layer of distribution rib, and two ends of the single layer of raft top rib are respectively positioned above connecting points of the inclined bottom edges and the upper bottom edge of the two sides; the upper end of the single-layer raft plate top rib is provided with a double-layer raft plate top rib parallel to the single-layer raft plate top rib, and two ends of the double-layer raft plate top rib are respectively located at the vertical side edges of the two ends.
7. The structure of claim 5, wherein the super thick raft foundation is constructed with multiple layers of steel bars at different elevations, and the structure is characterized in that: the truss web members are provided with four layers, the fourth layer of truss web members are arranged between raft bottom ribs and third layer distribution ribs, the third layer of truss web members are arranged between the third layer distribution ribs and second layer distribution ribs, the second layer of truss web members are arranged between the second layer distribution ribs and first layer distribution ribs, and the first layer of truss web members are arranged between the first layer distribution ribs and raft top ribs.
8. The structure of claim 7, wherein the super thick raft foundation is constructed with multiple layers of steel bars at different elevations, and the structure is characterized in that: one end of each truss web member in the fourth layer of truss web members is fixed at the joint of the raft bottom rib and the truss upright rod, and the other end of each truss web member is fixed at the joint of the third layer of distribution rib and the truss upright rod; one end of each truss web member in the third layer of truss web members is fixed at the connecting part of the third layer of distribution ribs and the truss vertical rods, and the other end of each truss web member is fixed at the connecting part of the second layer of distribution ribs and the truss vertical rods; one end of each truss web member in the second layer of truss web members is fixed at the joint of the second layer of distribution ribs and the truss upright rods, and the other end of each truss web member is fixed at the joint of the first layer of distribution ribs and the truss upright rods; one end of each truss web member in the first-layer truss web members is fixed at the joint of the first-layer distribution rib and the truss upright rod, and the other end of each truss web member is fixed at the joint of the raft top rib and the truss upright rod.
9. The structure of claim 8, wherein the super thick raft foundation is constructed with multiple layers of steel bars at different elevations, and the structure is characterized in that: all truss web members in each layer of truss web members are kept connected end to form an up-and-down wavy structure together, and the upper connecting parts of two truss web members in the next layer of truss web members are superposed with the lower connecting parts of two truss web members in the last layer of truss web members.
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