CN216193926U - Construction site trestle structure - Google Patents

Abstract

The utility model provides a construction site landing stage structure, including the landing stage structure of having constructed structure and driving, the structure of having constructed includes ground wall and basement part roof, the landing stage structure includes the landing stage support column, interim roof beam of landing stage and landing stage panel, the landing stage support column includes former design stake and the newly-increased stake of landing stage, the landing stage structure includes sharp landing stage and rotatory landing stage, the landing stage panel of sharp high-end (71) and the marginal fixed connection of basement part roof, rotatory landing stage divide into straight section and slant section, the landing stage panel of straight section is held concurrently by the basement part roof of this position. The utility model utilizes permanent structures such as a foundation pit enclosure structure, a permanent engineering pile and the like to arrange two trestles with different styles, forms a high-efficiency and safe earthwork outward transport operation assembly line, and the later-stage temporary structure can be used as a part of the permanent structure, thereby reducing the investment of temporary measures and creating economic benefits.

Description

Construction site trestle structure

Technical Field

The utility model belongs to temporary engineering of site construction, and particularly relates to a trestle structure for a construction site.

Background

At present, large-scale complex deep foundation pit engineering projects are more and more, and the multiple sites are in dense urban areas with complex surrounding environments, the construction site is narrow, and how to achieve the high efficiency of earth excavation and outward transportation safety is the first problem faced by the engineering. The existing site construction trestle generally needs to be realized by an inner support in a foundation pit, the trestle needs to be dismantled along with the dismantling of the inner support, and the complete dismantling of the trestle causes construction waste. When the depth of the foundation pit is large and the site is narrow and short of the conditions realized through the inner support, the traffic route from the excavation working surface to the earthwork outward transportation point cannot form flow line operation, and the problem of difficulty in earthwork outward transportation exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a trestle structure on a construction site, which aims to solve the technical problems that when the depth of a foundation pit is large, the site is narrow and lacks the condition realized by an inner support, a traffic route from an excavated working surface to an earthwork outward transport point cannot form flow line operation, and the earthwork outward transport is difficult; the technical problem that the trestle needs to be dismantled along with the dismantling of the inner support, so that construction waste is caused is solved.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a trestle structure on construction site comprises a constructed structure and a trestle structure for driving, wherein the constructed structure comprises a ground connection wall at the edge of a foundation pit, an annular crown beam connected with the top of the ground connection wall and a basement part top plate, the trestle structure comprises a trestle support column, a trestle temporary beam fixedly connected between the tops of the trestle columns and a trestle panel tiled on the upper side of the trestle temporary beam, the trestle support column comprises an original design pile and a trestle newly-added pile,

the trestle structure comprises a linear trestle and a rotary trestle, the linear trestle is arranged at the middle position of a foundation pit of a top plate of an underground chamber part towards the direction of a non-constructed foundation pit and obliquely arranged in the foundation pit in the height direction, two ends of the linear trestle are respectively a linear high end and a linear low end according to elevation, the linear high end of the linear trestle is a connection starting point, a trestle panel at the linear high end is fixedly connected with the edge of the top plate of the basement part, and the trestle panel at the linear low end is fixedly connected with the pit bottom of the foundation pit,

the rotary trestle is arranged at the edge position of a foundation pit of a part top plate of the underground part facing the direction of the un-constructed foundation pit, the horizontal projection of the rotary trestle is L-shaped, the rotary trestle is divided into a flat section and an oblique section in the height direction, the oblique section is vertical to the flat section, the trestle panel of the flat section is used by the part top plate of the underground part at the position, the outer end of the trestle panel of the flat section is fixedly connected with a crown beam, the inner end of the trestle panel of the flat section is supported by an original design pile, the oblique section is obliquely arranged in the foundation pit in the height direction, two ends are respectively an oblique high end and an oblique low end according to elevation, the oblique high end trestle panel is transited to the outer end of the flat section and is fixedly connected with the crown beam, and the trestle panel of the oblique low end is fixedly connected with the pit bottom of the foundation pit,

the driving route comprises an annular route which is started from a top plate of the underground chamber part, a linear trestle, a pit bottom of a foundation pit, a rotary trestle and then returned to the top plate of the underground chamber part.

The high-end trestle panel of straight line and the edge of basement part roof are drawn through first anchor bar and are connect, first anchor bar is that the vertical muscle of underground part roof is deep in the trestle support column and outside extension anchor goes into the high-end trestle panel of straight line and forms.

The inner end of the trestle panel of the straight section is connected with the crown beam through a second anchor bar in a pulling mode, and the second anchor bar is formed by enabling a longitudinal bar of the crown beam to penetrate into the top plate of the basement part of the straight section.

The pile of original design is permanent pile, including lower part engineering pile and upper portion steel lattice column, upper portion steel lattice column inserts in the lower part engineering pile, the newly-increased stake of landing stage is interim stake.

And the top of the upper steel lattice column extends into the outer end of the landing stage panel of the straight section.

The inter-wall-column support is additionally arranged between the underground diaphragm wall and the upper steel lattice column and comprises a horizontal steel support and an oblique steel support which are crossed, the inter-wall-column support and the upper steel lattice column are fixedly connected through a welding lug plate, the welding lug plate is fixedly connected to the upper steel lattice column, the end part of the inter-wall-column support is welded with the welding lug plate,

support between wall post and even through anchor otic placode fixed connection between the wall, the anchor otic placode includes anchor edition of books board and perpendicular anchor edition of books board and the bar planting of perforation plug welding, it is even in the wall to plant the bar anchor, the tip and the anchor edition of books board welding of supporting between the wall post.

The trestle support column is divided into an in-situ pile, an eccentric inward haunching pile and an eccentric outward cladding pile according to the eccentric condition of a temporary bridge.

Add the interim roof beam of trestle of axillary stake upside and be provided with the axillary, add the axillary and be inside protruding transition and connect the first beam that increases between the interim roof beam of the trestle of axillary stake upside, first increase the roof beam and be triangle-shaped, add the axillary and add the interior an organic whole of trestle of the interim roof beam of axillary both sides and be equipped with stirrup and encrypt the district, the scope that sets up that adds the axillary is accurate in order to guarantee to add the axillary stake bearing capacity that the stirrup encrypted the district, still is equipped with first edge strengthening rib between the interim roof beam of trestle that adds axillary and both sides, first edge strengthening rib draws and connects the edge setting that adds the axillary and the both ends anchor of first edge strengthening rib is gone into the distal end edge of the interim roof beam of trestle in the trestle.

The temporary trestle girder of cladding stake upside is equipped with cladding portion, cladding portion is located trestle bridge temporary roof beam's outside one side and outwards protrudes, and cladding portion is that the second between the trestle bridge temporary roof beam of transition and connection cladding stake both sides increases the roof beam, the pile bolck of cladding stake is buried to the cladding portion in, the second increases the roof beam and is trapezoidal, the reinforcing bar that the second increased the roof beam includes that the second increases roof beam owner muscle, second increases roof beam stirrup and second edge strengthening rib, the second increases roof beam owner muscle anchor to the trestle bridge temporary roof beam in, second edge strengthening rib along the marginal setting of cladding portion and the both ends anchor of second edge strengthening rib go into the trestle bridge temporary roof beam in the distal end edge of trestle bridge temporary roof beam.

Compared with the prior art, the utility model has the following characteristics and beneficial effects:

the utility model relates to a temporary project, which is used for excavating a traffic route from an operation surface to an earth outward transport point during foundation pit excavation, and adopts a form of combining a rotary trestle and a linear trestle, and a positive and negative zero basement top plate is connected with the high end of a trestle panel and is also used as a vehicle walking road surface, so that an annular road is created for the whole foundation pit. The rotary trestle makes full use of the vertical enclosing structure on the periphery of the foundation pit as a supporting point, and steel inclined strut wall connecting pieces are pre-positioned and embedded during the construction of the underground wall connecting piece. The straight section is a trestle upright post pile which is formed by fixing lattice posts on an original permanent engineering pile. And the landing stage support column then adopts the mode of landing stage interim roof beam armpit local enlargement or outsourcing stand pile to carry out the eccentric stay with the interim roof beam off normal of landing stage, and two landing stage slope sections are under construction along with the earth excavation degree of depth increase, set up the safety and stability that level and slant steel support guaranteed the landing stage. After the subsequent trestle is removed, reinforced concrete can be directly wrapped outside the lattice column of the trestle pile to form a permanent structural column, so that the procedure of removing the trestle pile is omitted.

The trestle type can greatly improve the flexibility of the transportation process in the foundation pit construction and the construction efficiency, and meanwhile, the temporary structure utilizes the permanent structure and can also flexibly arrange the site, thereby improving the safety and reducing the economic investment. The double-deck bridge system forms a loop in a narrow and closed construction site, and effectively solves the problems of transportation routes and efficiency.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic view of a beam column arrangement in a rotary trestle position.

Fig. 3 is a schematic view of a beam column arrangement in a linear trestle position.

Fig. 4 is a schematic sectional view taken along line B-B in fig. 2.

Fig. 5 is a schematic view of a welded ear plate.

Fig. 6 is a schematic structural view of an anchoring ear plate.

Fig. 7 is a side view schematic of the structure of fig. 6.

Fig. 8 is a schematic sectional view taken along line a-a in fig. 3.

Fig. 9 is a schematic view of the construction of the haunch pile.

Fig. 10 is a schematic structural view of a coated pile.

Fig. 11 is a schematic cross-sectional view of C-C in fig. 10.

Fig. 12 is a schematic view of a circular route.

Reference numerals: 1-diaphragm wall, 2-crown beam, 3-underground chamber part top plate, 4-trestle support column, 41-original design pile, 411-lower engineering pile, 412-upper steel lattice column, 42-trestle newly-added pile, 5-trestle temporary beam, 51-haunch, 52-cladding part, 6-trestle panel, 7-linear trestle, 71-linear high end, 72-linear low end, 8-rotary trestle, 81-straight section, 82-oblique section, 821-oblique high end, 822-oblique low end, 9-foundation pit, 10-first anchor bar, 11-second anchor bar, 12-horizontal steel support, 13-oblique steel support, 14-welding ear plate, 15-anchoring ear plate, 16-in-situ pile, 17-haunch pile, 18-cladding pile, 19-stirrup thickening region, 20-first edge reinforcing bar, 21-second added beam main bar and 22-second reinforcing bar edge reinforcing bar.

Detailed Description

Referring to fig. 1-3, a construction site trestle structure comprises a constructed structure and a trestle structure driven by a vehicle, wherein the constructed structure comprises a ground connecting wall 1 at the edge of a foundation pit, an annular crown beam 2 connected with the top of the ground connecting wall 1 and a basement part top plate 3, the trestle structure comprises trestle support columns 4, trestle temporary beams 5 fixedly connected between the tops of the trestle columns and trestle panels 6 tiled on the upper sides of the trestle temporary beams 5, and the trestle support columns 4 comprise original design piles 41 and trestle newly added piles 42.

Referring to fig. 3, the trestle structure includes straight line trestle 7 and rotatory trestle 8, straight line trestle 7 sets up at underground chamber part roof 3 towards the foundation ditch middle part position of the foundation ditch direction of not being under construction, and it sets up in the foundation ditch in the slant in the direction of height, and both ends are the high-end 71 of straight line and straight line low side 72 according to the elevation respectively, the high-end 71 of straight line trestle 7 is the connection initial point, and the trestle panel 6 of the high-end 71 of straight line and the marginal fixed connection of underground chamber part roof 3, the trestle panel 6 of straight line low side 72 and the pit bottom fixed connection of foundation ditch.

Referring to fig. 2, the rotary trestle 8 is disposed at the edge of the foundation pit in the direction of the non-constructed foundation pit at the top plate 3 of the underground chamber, and has an L-shaped horizontal projection, and is divided into a flat section 81 and an inclined section 82 in the height direction, the inclined section 82 is perpendicular to the flat section 81, the trestle panel 6 of the flat section 81 is used by the top plate 3 of the underground chamber at the position, the outer end of the trestle panel 6 of the flat section 81 is fixedly connected with the top beam 2, the inner end of the trestle panel 6 of the flat section 81 is supported by the original design pile 41, the inclined section 82 is obliquely disposed in the foundation pit in the height direction, the two ends are respectively an inclined high end 821 and an inclined low end 822 according to the elevation, the trestle panel 6 of the inclined high end 821 is fixedly connected with the top beam 2, and the trestle panel 6 of the inclined low end 822 is fixedly connected with the bottom of the foundation pit.

Referring to fig. 12, the path of the vehicle is a circular path including a pit bottom starting from the basement part ceiling 3, the linear trestle 7, the pit 9, the rotary trestle 8, and then returning to the basement part ceiling 3.

Referring to fig. 8, the trestle panel 6 at the high end 71 of the straight line is connected with the edge of the top plate 3 of the underground chamber part by a first anchor bar 10, and the first anchor bar 10 is formed by extending a longitudinal bar of the top plate 3 of the underground chamber part deeply into the trestle support column 4 and anchoring the longitudinal bar outwards into the trestle panel 6 at the high end 71 of the straight line. The inner end of the trestle panel 6 of the straight section 81 is connected with the crown beam 2 through a second anchor bar 11 in a pulling way, and the second anchor bar 11 is formed by a longitudinal bar of the crown beam 2 which penetrates into the top plate 3 of the basement part of the straight section 81.

Referring to fig. 4, the original design pile 41 is a permanent pile and includes a lower engineering pile 411 and an upper steel lattice column 412, the upper steel lattice column 412 is inserted into the lower engineering pile 411, and the trestle newly-added pile 42 is a temporary pile. The top of the upper steel lattice column 412 extends into the outer end of the landing stage panel 6 of the straight section 81.

It supports between wall post still to have increased between ground even wall 1 and the upper portion steel lattice column 412, support between the wall post including horizontal steel shotcrete 12 and slant steel shotcrete 13, slant steel shotcrete 13 is the cross form, it is shown referring to fig. 5, support between the wall post and upper portion steel lattice column 412 between through welding otic placode 14 fixed connection, welding otic placode 14 fixed connection is on upper portion steel lattice column 412, the tip and the welding otic placode 14 welding of supporting between the wall post. Referring to fig. 6-7, the wall-column support is fixedly connected with the diaphragm wall 1 through an anchoring ear plate 15, the anchoring ear plate 15 comprises an anchoring base plate and a steel bar which is vertically anchored to the anchoring base plate and is welded with a through hole in a plug manner, the steel bar is anchored in the diaphragm wall 1, and the end part of the wall-column support is welded with the anchoring base plate.

Referring to fig. 2, 3, 9, 10 and 11, the trestle supporting columns 4 are divided into in-situ piles 16, eccentric inward haunched piles 17 and eccentric outward cladding piles 18 according to the eccentricity relative to the trestle temporary beams 5.

Referring to fig. 9, the trestle temporary beam 5 on the upper side of the haunching pile 17 is provided with an haunching part 51, the haunching part 51 is a first added beam which is in inward convex transition and connected between the trestle temporary beams 5 on the upper side of the haunching pile 17, the first added beam is triangular, the haunching part 51 and the trestle temporary beams 5 on both sides of the haunching part 51 are integrally provided with stirrup encryption regions 19, the setting range of the haunching part 51 is determined by ensuring the bearing capacity of the haunching pile 17 in the stirrup encryption regions 19, a first edge reinforcing rib 20 is further arranged between the haunching part 51 and the trestle temporary beams 5 on both sides, the first edge reinforcing rib 20 is arranged along the edge of the haunching part 51 in a pulling manner, and both ends of the first edge reinforcing rib 20 are anchored in the trestle temporary beams 5 until the far end edge of the trestle temporary beams 5.

Referring to fig. 10 to 11, the temporary trestle girder 5 on the upper side of the coated pile 18 is provided with a coating part 52, the coating part 52 is located on one side of the outer side of the temporary trestle girder 5 and protrudes outwards, the coating part 52 is a second additional girder which is in transition connection with the temporary trestle girders 5 on both sides of the coated pile 18, the pile top of the coated pile 18 is embedded into the coating part 52, the second additional girder is trapezoidal, the reinforcing steel bars of the second additional girder comprise a second additional girder main reinforcing bar 21, a second additional girder stirrup and a second edge reinforcing rib 22, the second additional girder main reinforcing bar 21 is anchored into the temporary trestle girder 5, the second edge reinforcing rib 22 is arranged along the edge of the coating part 52, and both ends of the second edge reinforcing rib 22 are anchored into the temporary trestle girder 5 to the far end edge of the temporary trestle girder 5.

The construction process of the utility model is as follows:

the construction method comprises the following steps of constructing a ground connection wall, wherein the ground connection wall is used as one side support of a straight section of a rotary trestle, embedding and welding lug plates and anchoring lug plates at the elevations where a horizontal steel support and an oblique steel support are connected with the ground connection wall, and reserving second anchor bars in a crown beam.

And step two, pile foundation construction is carried out, early design is carried out, the trestle support column utilizes the original design pile as much as possible according to the arrangement position of the structural engineering pile, when the original design pile is also used as the pile foundation construction of the trestle support column, the upper steel lattice column is installed on the upper portion of the reinforcement cage of the original design pile, and the whole pile foundation system model selection is determined through calculation design.

Step three, the construction completion time of the top plate of the basement part of the project constructed by the local reverse construction method is earlier, the top plate of the basement part is used as the starting end of the trestle structure after the construction of the top plate of the basement part is completed, and first anchor bars are reserved at the top plate of the basement part; without the basement roof structure, the initial end of the trestle structure needs to be taken as the initial end from the top of the foundation pit.

And fourthly, carrying out earth excavation to expose the upper steel lattice column, erecting a template support by pouring a cushion layer on the lower part, and carrying out the first step of trestle construction. Binding primary and secondary beam reinforcing steel bars of the temporary trestle bridge beam, wherein the temporary trestle bridge beam is arranged at the top of the upper steel lattice, and at the connecting node of the temporary trestle bridge beam and the upper steel lattice, the reinforcing steel bars penetrate through lattice columns as far as possible through gaps between angle steel of the upper steel lattice, and batten plates of the lattice columns extending into the middle part of the trestle bridge beam are cut off to ensure the penetration of the reinforcing steel bars in the trestle beam; if the reinforcing steel bars are more, the reinforcing steel bars are cut off at the nodes and are welded on the angle steel, and then additional reinforcing steel bars are added by avoiding the angle steel. Binding the beam plate reinforcing steel bars with the reinforcing steel bars reserved on the top plate or the crown beam of the basement, pouring the beam plate reinforcing steel bars into a whole,

when the engineering pile used as the trestle pile and the temporary trestle girder are eccentric, different reinforcements are carried out according to the eccentric condition.

And fifthly, after the construction of the first step of the two trestles is finished and the design strength is reached, the two trestles can be put into use, a double-trestle transportation system is formed, and the requirement of external transportation of earth excavation at the first stage is met.

And sixthly, excavating a trestle pile exposing a subsequent ramp section when the earth is excavated until the trestle elevation does not meet the requirement, and performing the construction of the trestle in the second step, wherein the cantilever of the lattice column has larger length, and a horizontal support and a steel diagonal support are installed.

And seventhly, after the two-step trestle structure is lengthened, the double-trestle system is continuously used to assist earth to continue excavating and transporting.

And step eight, after all the earthwork excavation and outward transportation tasks are finished, the trestle structure is dismantled section by section along with upward construction of the structure, the lattice column does not need to be dismantled when the trestle supporting column can be continuously used subsequently, only the section of the temporary structure needs to be cut off when the trestle is dismantled, and the section of the permanent structure does not need to be dismantled. The permanent structure is utilized to design and apply the trestle, the trestle which is met is flexibly arranged and has bearing capacity when in use, the dismantling of the temporary structure can be reduced, the cost is saved, and the construction period is shortened.

Claims (9)

1. The utility model provides a job site landing stage structure which characterized in that: the trestle structure comprises a constructed structure and a trestle structure, wherein the constructed structure comprises a ground connecting wall (1) at the edge of a foundation pit, an annular crown beam (2) connected with the top of the ground connecting wall (1) and a basement part top plate (3), the trestle structure comprises a trestle support column (4), a trestle temporary beam (5) fixedly connected between the tops of the trestle columns and a trestle panel (6) tiled at the upper side of the trestle temporary beam (5), the trestle support column (4) comprises an original design pile (41) and a trestle newly added pile (42),

the trestle structure comprises a linear trestle (7) and a rotary trestle (8), wherein the linear trestle (7) is arranged at the middle position of a foundation pit of an underground chamber part top plate (3) towards the direction of the un-constructed foundation pit, the linear trestle is obliquely arranged in the foundation pit in the height direction, the two ends of the linear trestle are respectively a linear high end (71) and a linear low end (72) according to elevation, the linear high end (71) of the linear trestle (7) is a connection starting point, a trestle panel (6) of the linear high end (71) is fixedly connected with the edge of the basement part top plate (3), and the trestle panel (6) of the linear low end (72) is fixedly connected with the pit bottom of the foundation pit,

rotatory landing stage (8) set up in underground chamber part roof (3) towards the foundation ditch border position of not constructing the foundation ditch direction, and its horizontal projection is the L type, divide into straight section (81) and slant section (82) in the direction of height, slant section (82) vertical straight section (81), landing stage panel (6) of straight section (81) are used simultaneously by basement part roof (3) of this position, and landing stage panel (6) outer end and the guan liang (2) fixed connection of straight section (81), and landing stage panel (6) inner of straight section (81) is supported through former design stake (41), slant section (82) slant sets up in the foundation ditch on the direction of height, and both ends are slant high end (821) and slant low end (822) respectively according to the elevation, and landing stage panel (6) transition straight section (81) of slant high end (821) outer end, with guanliang (2) fixed connection, a trestle panel (6) at the inclined lower end (822) is fixedly connected with the pit bottom of the foundation pit,

the driving route is an annular route which starts from a top plate (3) of the underground chamber part, a linear trestle (7), a pit bottom of a foundation pit (9), a rotary trestle (8) and returns to the top plate (3) of the underground chamber part.

2. The construction site trestle construction of claim 1, wherein: the trestle bridge panel (6) of straight line high-end (71) is drawn with the edge of basement part roof (3) through first anchor bar (10), first anchor bar (10) are deep in trestle support column (4) and outwards extend anchor in trestle bridge panel (6) of straight line high-end (71) and are formed for the vertical muscle of basement part roof (3).

3. The construction site trestle construction of claim 1, wherein: the inner end of a trestle panel (6) of the straight section (81) is connected with the crown beam (2) through a second anchor bar (11), and the second anchor bar (11) is formed by a longitudinal bar of the crown beam (2) penetrating into the basement part top plate (3) of the straight section (81).

4. The construction site trestle construction of claim 3, wherein: the pile (41) is a permanent pile and comprises a lower engineering pile (411) and an upper steel lattice column (412), the upper steel lattice column (412) is inserted into the lower engineering pile (411), and the newly added pile (42) of the trestle is a temporary pile.

5. The construction site trestle construction of claim 4, wherein: the top of the upper steel lattice column (412) extends into the outer end of the trestle panel (6) of the flat section (81).

6. The construction site trestle construction of claim 5, wherein: the wall column support is additionally arranged between the underground wall (1) and the upper steel lattice column (412), the wall column support comprises a horizontal steel support (12) and an oblique steel support (13), the oblique steel support (13) is in a cross shape, the wall column support and the upper steel lattice column (412) are fixedly connected through a welding lug plate (14), the welding lug plate (14) is fixedly connected to the upper steel lattice column (412), and the end part of the wall column support is welded with the welding lug plate (14),

support between wall post and ground through anchor otic placode (15) fixed connection between even wall (1), anchor otic placode (15) are including anchor this board and perpendicular anchor this board and the bar planting of perforation plug welding, the bar planting anchor is gone into in even wall (1), the tip and the anchor of supporting between the wall post are welded.

7. The construction site trestle construction of claim 1, wherein: the trestle supporting columns (4) are divided into in-situ piles (16), eccentric inward haunched piles (17) and eccentric outward coated piles (18) according to the eccentric condition of the corresponding trestle temporary beam (5).

8. The construction site trestle construction of claim 7, wherein: the temporary trestle bridge beam (5) at the upper side of the haunched pile (17) is provided with haunched parts (51), the haunch (51) is a first added beam which is convexly transited inwards and connected between the upper side trestle temporary beams (5) of the haunch pile (17), the first added beam is triangular, stirrup encryption areas (19) are integrally arranged in the haunch part (51) and the trestle temporary beam (5) at the two sides of the haunch part (51), the arrangement range of the haunch (51) is based on the bearing capacity of the haunch pile (17) in the stirrup encryption area (19), a first edge reinforcing rib (20) is arranged between the haunch (51) and the trestle temporary beam (5) on two sides, the first edge reinforcing rib (20) is arranged along the edge of the haunch (51) in a pulling mode, and two ends of the first edge reinforcing rib (20) are anchored into the temporary trestle beam (5) to the far end edge of the temporary trestle beam (5).

9. The construction site trestle construction of claim 7, wherein: temporary trestle bridge roof beam (5) of cladding stake (18) upside is equipped with cladding portion (52), cladding portion (52) are located the outside of temporary trestle bridge roof beam (5) and outwards bulge on one side, cladding portion (52) are that the transition connects the second between the temporary trestle bridge roof beam (5) of cladding stake (18) both sides increases the roof beam, the pile bolck of cladding stake (18) is buried to in cladding portion (52), the second increases the roof beam and is trapezoidal, the reinforcing bar that the second increased the roof beam includes second increase roof beam main muscle (21), second increase roof beam stirrup and second edge strengthening rib (22), second increase roof beam main muscle (21) anchor to temporary trestle bridge roof beam (5) in, second edge strengthening rib (22) set up and the both ends anchor of second edge strengthening rib (22) go into temporary trestle bridge roof beam (5) in until the distal end edge of temporary trestle bridge roof beam (5) along the edge of cladding portion (52).

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