CN209261595U - Assembly concrete tunnel vault structure - Google Patents

Abstract

The utility model provides a kind of assembly concrete tunnel vault structure, is formed by connecting by multiple groups precast concrete tunnel arch bar；Every group includes two pieces of precast concrete tunnel arch bars, and horizontal connection ribs is opposite, and two groups of adjacent precast concrete tunnel arch bars are that longer precast concrete tunnel arch bar is adjacent with shorter precast concrete tunnel arch bar；The center-line joint of the precast concrete tunnel arch bar of two adjacent groups is staggered.The utility model has the beneficial effects that template can be saved, improve execution conditions when production, raise labour productivity, accelerate construction progress, guarantees construction quality.The arch bar of no intermediate supports can be provided for large scale, large span, big sections of tunnel.

Description

Assembly concrete tunnel vault structure

Technical field

The utility model belongs to Impacts Evaluation of Urban Tunnel engineering field and urban operating mechanism technical field, more particularly to a kind of dress With formula concrete tunnel vault construction.

Background technique

Urban transportation construction at present is like a raging fire, as country is pushed further into pipe gallery, sponge Urban strategy, China Big and medium-sized cities will start the new round climax of underground engineering construction, and due to the scarcity of the underground space, to collection, " Urban Underground is comprehensive The demand of the Urban Underground Complex of conjunction piping lane, Urban Underground expressway, urban underground construction space " is huge.

The exploitation and construction of Japan and the American-European underground space maintain the leading position, and advocate at first and propose underground city and city The synthesization of city's underground space and three-dimensional utility strategies, nineteen ninety propose Tokyo Declaration: the Devoting Major Efforts To Developing underground space, start people Class new cave period, International Tunnelling Association in 2010 expand to tunnel and underground space association and declare: 21 century is underground The century in space.

To mark international metropolis, become extensive style, booth large flat bread urban development pattern into intensive, solid mode, to underground Want space；Break through urban land, air, water source, greenery patches, the per capita constraint of the resource environments total amount such as city space, the energy, environment； Sea, greening deficiency, real estate finance transition, old town are seen to traffic congestion, air dirt, noise pollution, visual pollution, city The urban disease that the tricks such as vigor decline incur life carries out comprehensive improvement；Change made in China cultivates height leading in the world into Created in China Hold industry cluster.

Cities of Foreign Countries underground space development is with a long history, mostly combines commercial facility with Large Underground transport hub and stops Parking lot holds a variety of traffic forms in the underground space synthesis type presentation of one.In the world, Japan and America and Europe are in underground sky Between exploitation and construction maintain the leading position, advocate and propose the synthesization and solid of underground city and urban underground space at first Change utility strategies.Totally see have out when including many countries of underground space synthesis of multiple transportation modes or multiple functions It is existing, there is not yet collection " Urban Underground pipe gallery, Urban Underground expressway, urban underground construction space " Urban Underground Complex Type.Therefore, there is an urgent need to develop underground space synthesises, adapt to national green building and the strategy of sustainable development.

Utility model content

Utility model aims to solve the assembling problems of underground tunnel project, especially solution large span, big ruler The assembly problem of degree, big sections of tunnel vault.

To achieve the goals above, the technical solution adopted in the utility model are as follows:

A kind of assembly concrete tunnel vault structure is formed by connecting by multiple groups precast concrete tunnel arch bar；Every group of packet Two pieces of precast concrete tunnel arch bars are included, the horizontal connection ribs of two pieces of precast concrete tunnel arch bars is opposite, pre- in two sides Concrete tunnel arch bar processed be bi-directionally connected installation big angle mouthful and circumferential horizontal connection installation notch are respectively adopted and are bolted；Its In one piece of longer precast concrete tunnel arch bar precast concrete tunnel arch bar long 200 ~ 500mm shorter than another piece；

Two groups of adjacent precast concrete tunnel arch bars be longer precast concrete tunnel arch bar with it is shorter prefabricated Concrete tunnel arch bar is adjacent；Two groups of adjacent precast concrete tunnel arch bars are by being bi-directionally connected the small angle mouthful of installation, Zong Xianglian Installation notch are connect to be connected by screw bolts；Both ends are bi-directionally connected that installation small angle mouthful is corresponding, and intermediate being located at is longer prefabricated mixed Solidifying soil tunnel arch bar is bi-directionally connected the small angle mouthful of installation and is bolted；

The center-line joint of the precast concrete tunnel arch bar of two adjacent groups is staggered.

Further, precast concrete tunnel arch bar mainly includes arch top plate, vertical connection reinforcement rib, horizontal company Ribs is connect, installation big angle mouthful is bi-directionally connected, is bi-directionally connected the small angle mouthful of installation, is circumferential horizontal connection installation notch, longitudinally connected Installation notch, circumferential vertical connection installation notch, screw hole, whole reinforcement steelframe, stress arc independence reinforcing bar, ring muscle,

Arch top plate is arc panel, and the circumferential connecting pin of two of plate, an end face is level, and other end is vertical；In water Vertical connection reinforcement rib is respectively set in planar end surface, the two sides of plate, and the plane that vertical connection reinforcement rib is connect with horizontal end face is perpendicular It faces directly；In vertical end face, horizontal connection ribs is respectively set in the two sides of plate, what horizontal connection ribs was connect with vertical end face Plane is horizontal plane；

It is bi-directionally connected the small angle mouthful of installation in being respectively set for the both ends of vertical connection reinforcement rib, and opens up screw hole, wherein Two vertical screw holes lead to horizontal end face, and a horizontal screw hole leads to vertical side end face；The two of horizontal connection ribs Being respectively set for end is bi-directionally connected installation big angle mouthful, and opens up screw hole, and the horizontal screw hole of two of them leads to vertical end face, and one Horizontal screw hole leads to vertical side end face；The circumferential vertical connection installation notch of setting between the small angle mouthful of installation are being bi-directionally connected, And it opens up two vertical screw holes and leads to horizontal end face；Being bi-directionally connected between installation big angle mouthful, several circumferential horizontal connection peaces are set Tankage mouth, and open up two vertical screw holes and lead to vertical end face；

It is being bi-directionally connected installation big angle mouthful and is being bi-directionally connected the corresponding position in the small angle mouthful of installation and circumferential horizontal connection peace Elongated whole reinforcement steelframe is arranged in tankage mouth position corresponding with the vertical connection installation notch of circumferential direction, and entirety reinforces the perpendicular of steelframe Straight connecting pin steel plate is located at the horizontal end face of plate；

Junction steel plate screw hole on the steel plate of vertical connecting pin is located between two stress arch steels of horizontal distribution；It is horizontal Connecting pin steel plate is located at the vertical end face of plate, and the junction steel plate screw hole of horizontal connection end steel plate is located at two stress being distributed vertically Between arch steel；Several stress arc independence reinforcing bars are respectively provided with integrally reinforcing the top and bottom between steelframe,

Several equally distributed ring muscle are set, and ring muscle is ring-type, reinforces steelframe, stress arc independence stirrup for whole Firmly.

Further, the whole steelframe 1-10 that reinforces mainly includes stress arch steel 1-10-1, horizontal connection end steel Plate 1-10-2, vertical connecting pin steel plate 1-10-3, junction steel plate screw hole 1-10-4, horizontal connection enhancing muscle 1-10-5, connect vertically Enhancing muscle 1-10-6 is met,

4 stress arch steel 1-10-1 are arched ribs, are located at 4 corners, both ends respectively with horizontal connection Steel plate 1-10-2 and vertical connecting pin steel plate 1-10-3 is held, connection type is welding；Flushconnection end steel plate 1-10-2 is vertical steel Plate, at horizontal connection end, four interior angles of steel plate 1-10-2 open junction steel plate screw hole 1-10-4, in horizontal connection end steel plate 1-10- Four horizontal connections are welded on 2 enhances muscle 1-10-5, wherein 2 horizontal connection enhancing muscle 1-10-5 and horizontal connection end steel plate 1- The tie point of 10-2 is located at the tie point of 2 stress arch steel 1-10-1 of lower layer and horizontal connection end steel plate 1-10-2 Underface after level is overhanging and is folded upward at, and intersects respectively with upper layer stress arch steel 1-10-1；Another 2 horizontal connections The tie point of enhancing muscle 1-10-5 and horizontal connection end steel plate 1-10-2 be located at the 2 stress arch steel 1-10-1 in upside with The surface of the tie point of horizontal connection end steel plate 1-10-2, it is horizontal it is overhanging after and bend downward, and with lower layer's stress arc-shaped steel Muscle 1-10-1 intersects respectively；

Vertical connecting pin steel plate 1-10-3 is horizontal steel plate, opens company in four interior angles of vertical connecting pin steel plate 1-10-3 Meet steel plate screw hole 1-10-4；

Four vertical connecting reinforcement 1-10-6 are welded on vertical connecting pin steel plate 1-10-3, wherein 2 vertical connections The tie point of enhancing muscle 1-10-6 and vertical connecting pin steel plate 1-10-3 is located at 2 stress arch steel 1-10-1 on the inside of arc With the inside of the tie point of vertical connecting pin steel plate 1-10-3, hand over respectively straight up and with outer layer stress arch steel 1-10-1 Fork；The tie point of another 2 vertical connecting reinforcement 1-10-6 and vertical connecting pin steel plate 1-10-3 is located at 2, the outside of arc The outside of the tie point of stress arch steel 1-10-1 and vertical connecting pin steel plate 1-10-3, it is vertical it is overhanging after and bend inwards, And intersect respectively with two vertical connecting reinforcement 1-10-6 of inside.

Beneficial effect

The utility model has the beneficial effects that template can be saved, improve execution conditions when production, improves labour production Rate accelerates construction progress, and guarantees construction quality.No intermediate supports can be provided for large scale, large span, big sections of tunnel Arch bar.

Detailed description of the invention

The assembly concrete tunnel vault structure in the utility model is described further with reference to the accompanying drawing:

Fig. 1 is assembly concrete tunnel vault structural plan schematic diagram；

Fig. 2 is the positive elevational schematic view of assembly concrete tunnel vault structure；

Fig. 3 is precast concrete tunnel arch bar floor map；

Fig. 4 is the positive elevational schematic view of precast concrete tunnel arch bar；

Fig. 5 is the main reinforcing bar configuration plane schematic diagram of precast concrete tunnel arch bar；

Fig. 6 is that arch bar main reinforcing bar in precast concrete tunnel configures positive elevational schematic view.

In figure: 1 is precast concrete tunnel arch bar；2 be bolt；

1-1 is arch top plate；1-2 is vertical connection reinforcement rib；1-3 is horizontal connection ribs；1-4 is to be bi-directionally connected peace Fill big angle mouthful；1-5 is to be bi-directionally connected the small angle mouthful of installation；1-6 is circumferential horizontal connection installation notch；1-7 is longitudinally connected installation Notch；1-8 is circumferential vertical connection installation notch；1-9 is screw hole；1-10 is whole reinforcement steelframe；1-10-1 is stress arc Reinforcing bar；1-10-2 is horizontal connection end steel plate；1-10-3 is vertical connecting pin steel plate；1-10-4 is junction steel plate screw hole；1-11 For stress arc independence reinforcing bar；1-12 is ring muscle.

Specific embodiment:

In order to further illustrate the utility model, the utility model is retouched in detail with reference to the accompanying drawings and embodiments It states, but they cannot be interpreted as to the restriction to scope of protection of the utility model.

Embodiment: a kind of assembly concrete tunnel vault structure, as shown in Fig. 1 ~ Fig. 6,

Assembly concrete tunnel vault structure is formed by connecting by multiple groups precast concrete tunnel arch bar 1；Every group includes two The horizontal connection ribs 1-3 of block precast concrete tunnel arch bar 1, two pieces of precast concrete tunnel arch bars 1 is opposite, pre- in two sides Bolt is respectively adopted in the installation big angle mouthful 1-4 and circumferential direction horizontal connection installation notch 1-6 that is bi-directionally connected of concrete tunnel arch bar 1 processed 2 connections；One of longer precast concrete tunnel arch bar 1 precast concrete tunnel arch bar 1 shorter than another piece is long by 200 ~500mm；

Two groups of adjacent precast concrete tunnel arch bars 1 be longer precast concrete tunnel arch bar 1 with it is shorter pre- Concrete tunnel arch bar 1 processed is adjacent；Two groups of adjacent precast concrete tunnel arch bars 1 by be bi-directionally connected the small angle mouthful 1-5 of installation, Longitudinally connected installation notch 1-7 is connected using bolt 2；Both ends are bi-directionally connected that installation small angle mouthful 1-5 is corresponding, and intermediate is located at Longer precast concrete tunnel arch bar 1 is bi-directionally connected the small angle mouthful 1-5 of installation and is connected by bolt 2；

The center-line joint of the precast concrete tunnel arch bar 1 of two adjacent groups is staggered.

Precast concrete tunnel arch bar 1 mainly includes arch top plate 1-1, vertical connection reinforcement rib 1-2, horizontal connection Ribs 1-3, it is bi-directionally connected installation big angle mouthful 1-4, is bi-directionally connected the small angle mouthful 1-5 of installation, circumferential horizontal connection installation notch 1- 6, longitudinally connected installation notch 1-7, circumferential vertical connection installation notch 1-8, screw hole 1-9, whole reinforcement steelframe 1-10, stress arc Shape independence reinforcing bar 1-11, ring muscle 1-12,

Arch top plate 1-1 is arc panel, and the circumferential connecting pin of two of plate, an end face is level, and other end is vertical；? Vertical connection reinforcement rib 1-2 is respectively set in horizontal end face, the two sides of plate, what vertical connection reinforcement rib 1-2 was connect with horizontal end face Plane is vertical plane；In vertical end face, the two sides of plate are respectively set horizontal connection ribs 1-3, horizontal connection ribs 1-3 with The plane of vertical end face connection is horizontal plane；

It is bi-directionally connected the small angle mouthful 1-5 of installation in being respectively set for the both ends of vertical connection reinforcement rib 1-2, and opens up screw hole 1-9, the vertical screw hole 1-9 of two of them lead to horizontal end face, and a horizontal screw hole 1-9 leads to vertical side end face；In level Being respectively set for the both ends of connection reinforcement rib 1-3 is bi-directionally connected installation big angle mouthful 1-4, and opens up screw hole 1-9, two of them water Flat screw hole 1-9 leads to vertical end face, and a horizontal screw hole 1-9 leads to vertical side end face；It is being bi-directionally connected the small angle mouthful of installation Circumferential vertical connection installation notch 1-8 is set between 1-5, and opens up two vertical screw hole 1-9 and leads to horizontal end face；In two-way company It connects and several circumferential horizontal connection installation notch 1-6 is set between the 1-4 of installation big angle mouthful, and open up two vertical screw hole 1-9 and lead to Vertical end face；

The position corresponding with the small angle mouthful 1-5 of installation is bi-directionally connected big angle mouthful 1-4 and circumferential level are installed being bi-directionally connected The position corresponding with circumferential connection installation notch 1-8 vertically connection installation notch 1-6 is arranged elongated entirety and reinforces steelframe 1-10, The whole vertical connecting pin steel plate 1-10-3 for reinforcing steelframe 1-10 is located at the horizontal end face of plate；

Junction steel plate screw hole 1-10-4 on vertical connecting pin steel plate 1-10-3 is located at two stress arcs of horizontal distribution Between reinforcing bar 1-10-1；Horizontal connection end steel plate 1-10-2 is located at the vertical end face of plate, the company of horizontal connection end steel plate 1-10-2 Steel plate screw hole 1-10-4 is met to be located between two stress arch steel 1-10-1 being distributed vertically；Integrally reinforce steelframe 1-10 it Between top and bottom be respectively provided with several stress arc independence reinforcing bar 1-11,

Several equally distributed ring muscle 1-12 are set, and ring muscle 1-12 is ring-type, reinforces steelframe 1-10, stress arc for whole Shape independence reinforcing bar 1-11 is waled.

It is described it is whole reinforce steelframe 1-10 mainly include stress arch steel 1-10-1, horizontal connection end steel plate 1-10-2, Vertical connecting pin steel plate 1-10-3, junction steel plate screw hole 1-10-4, horizontal connection enhance muscle 1-10-5, vertical connecting reinforcement 1- 10-6,

4 stress arch steel 1-10-1 are arched ribs, are located at 4 corners, both ends respectively with horizontal connection Steel plate 1-10-2 and vertical connecting pin steel plate 1-10-3 is held, connection type is welding；Horizontal connection end steel plate 1-10-2 is vertical Steel plate, at horizontal connection end, four interior angles of steel plate 1-10-2 open junction steel plate screw hole 1-10-4, in horizontal connection end steel plate 1- Four horizontal connections are welded on 10-2 enhances muscle 1-10-5, wherein 2 horizontal connection enhancing muscle 1-10-5 and horizontal connection end steel The tie point of plate 1-10-2 is located at the connection of lower layer 2 stress arch steel 1-10-1 and horizontal connection end steel plate 1-10-2 The underface of point after level is overhanging and is folded upward at, and intersects respectively with upper layer stress arch steel 1-10-1；Another 2 levels The tie point of connecting reinforcement 1-10-5 and horizontal connection end steel plate 1-10-2 is located at the 2 stress arch steel 1- in upside The surface of the tie point of 10-1 and horizontal connection end steel plate 1-10-2, it is horizontal it is overhanging after and bend downward, and with lower layer's stress Arch steel 1-10-1 intersects respectively；

Vertical connecting pin steel plate 1-10-3 is horizontal steel plate, opens company in four interior angles of vertical connecting pin steel plate 1-10-3 Meet steel plate screw hole 1-10-4；

Four vertical connecting reinforcement 1-10-6 are welded on vertical connecting pin steel plate 1-10-3, wherein 2 vertical connections The tie point of enhancing muscle 1-10-6 and vertical connecting pin steel plate 1-10-3 is located at 2 stress arch steel 1-10-1 on the inside of arc With the inside of the tie point of vertical connecting pin steel plate 1-10-3, hand over respectively straight up and with outer layer stress arch steel 1-10-1 Fork；The tie point of another 2 vertical connecting reinforcement 1-10-6 and vertical connecting pin steel plate 1-10-3 is located at 2, the outside of arc The outside of the tie point of stress arch steel 1-10-1 and vertical connecting pin steel plate 1-10-3, it is vertical it is overhanging after and bend inwards, And intersect respectively with two vertical connecting reinforcement 1-10-6 of inside.

The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and Retouching also should be regarded as the protection scope of the utility model.

Claims (3)

1. a kind of assembly concrete tunnel vault structure, it is characterised in that: connected by multiple groups precast concrete tunnel arch bar (1) It forms；Every group includes two pieces of precast concrete tunnel arch bars (1), and the horizontal connection of two pieces of precast concrete tunnel arch bars (1) adds Strong rib (1-3) is bi-directionally connected installation big angle mouthful (1-4) and circumferential direction level relatively, in two sides precast concrete tunnel arch bar (1) Bolt (2) connection is respectively adopted in connection installation notch (1-6)；One of longer precast concrete tunnel arch bar (1) is than another Long 200 ~ the 500mm of one piece shorter of precast concrete tunnel arch bar (1)；

Two groups of adjacent precast concrete tunnel arch bars (1) be longer precast concrete tunnel arch bar (1) with it is shorter pre- Concrete tunnel arch bar (1) processed is adjacent；Two groups of adjacent precast concrete tunnel arch bars (1) are by being bi-directionally connected the small angle mouthful of installation (1-5), longitudinally connected installation notch (1-7) are connected using bolt (2)；Both ends are bi-directionally connected the small angle mouthful (1-5) of installation relatively It answers, intermediate being bi-directionally connected positioned at longer precast concrete tunnel arch bar (1) is installed small angle mouthful (1-5) and connected by bolt (2) It connects；

The center-line joint of the precast concrete tunnel arch bar (1) of two adjacent groups is staggered.

2. assembly concrete tunnel vault structure according to claim 1, it is characterised in that: the precast concrete tunnel Road arch bar (1) mainly includes arch top plate (1-1), vertical connection reinforcement rib (1-2), horizontal connection ribs (1-3), two-way company Installation big angle mouthful (1-4) is connect, the small angle mouthful (1-5) of installation is bi-directionally connected, is circumferential horizontal connection installation notch (1-6), longitudinally connected Installation notch (1-7), circumferential vertical connection installation notch (1-8), screw hole (1-9), whole reinforcement steelframe (1-10), stress arc Independent reinforcing bar (1-11), ring muscle (1-12),

Arch top plate (1-1) is arc panel, and the circumferential connecting pin of two of plate, an end face is level, and other end is vertical；In water Vertical connection reinforcement rib (1-2) is respectively set in planar end surface, the two sides of plate, and vertical connection reinforcement rib (1-2) connect with horizontal end face Plane be vertical plane；In vertical end face, horizontal connection ribs (1-3), horizontal connection ribs is respectively set in the two sides of plate The plane that (1-3) is connect with vertical end face is horizontal plane；

It is bi-directionally connected the small angle mouthful (1-5) of installation in being respectively set for the both ends of vertical connection reinforcement rib (1-2), and opens up screw hole (1-9), the vertical screw hole of two of them (1-9) lead to horizontal end face, and a horizontal screw hole (1-9) leads to vertical side end face； It is bi-directionally connected installation big angle mouthful (1-4) in being respectively set for the both ends of horizontal connection ribs (1-3), and opens up screw hole (1- 9), the horizontal screw hole of two of them (1-9) leads to vertical end face, and a horizontal screw hole (1-9) leads to vertical side end face；Double Circumferential vertical connection installation notch (1-8) of setting between small angle mouthful (1-5) is installed to connection, and opens up two vertical screw hole (1- 9) horizontal end face is led to；Being bi-directionally connected between installation big angle mouthful (1-4), several circumferential horizontal connection installation notch (1- are set 6) it, and two vertical screw holes (1-9) is opened up leads to vertical end face；

The corresponding position of small angle mouthful (1-5) and circumferential level are installed being bi-directionally connected to install big angle mouthful (1-4) and be bi-directionally connected Connection installation notch (1-6) and the corresponding position of circumferential vertical connection installation notch (1-8) are arranged elongated entirety and reinforce steelframe (1-10), the whole vertical connecting pin steel plate (1-10-3) for reinforcing steelframe (1-10) are located at the horizontal end face of plate；

Junction steel plate screw hole (1-10-4) on vertical connecting pin steel plate (1-10-3) is located at two stress arcs of horizontal distribution Between reinforcing bar (1-10-1)；Horizontal connection end steel plate (1-10-2) is located at the vertical end face of plate, horizontal connection end steel plate (1-10- 2) junction steel plate screw hole (1-10-4) is located between two stress arch steels (1-10-1) being distributed vertically；Integrally adding Top and bottom between strong steelframe (1-10) are respectively provided with several stress arc independence reinforcing bars (1-11),

Several equally distributed ring muscle (1-12) are set, and ring muscle (1-12) is ring-type, reinforces steelframe (1-10), stress for whole Arc independence reinforcing bar (1-11) is waled.

3. assembly concrete tunnel vault structure according to claim 2, it is characterised in that: the whole reinforcement steelframe (1-10) mainly includes stress arch steel (1-10-1), horizontal connection end steel plate (1-10-2), vertical connecting pin steel plate (1- 10-3), junction steel plate screw hole (1-10-4), horizontal connection enhance muscle (1-10-5), vertical connecting reinforcement (1-10-6),

4 stress arch steels (1-10-1) are arched ribs, are located at 4 corners, both ends respectively with horizontal connection end Steel plate (1-10-2) and vertical connecting pin steel plate (1-10-3), connection type are welding；Flushconnection end steel plate (1-10-2) is perpendicular Straight steel plate opens junction steel plate screw hole (1-10-4) in four interior angles of horizontal connection end steel plate (1-10-2), at horizontal connection end Four horizontal connections enhancing muscle (1-10-5) is welded on steel plate (1-10-2), wherein 2 horizontal connections enhancings muscle (1-10-5) with The tie point of horizontal connection end steel plate (1-10-2) is located at 2 stress arch steels (1-10-1) of lower layer and horizontal connection end The underface of the tie point of steel plate (1-10-2), it is horizontal it is overhanging after and be folded upward at, and with upper layer stress arch steel (1-10- 1) intersect respectively；The tie point of another 2 horizontal connections enhancing muscle (1-10-5) and horizontal connection end steel plate (1-10-2) distinguishes position It is horizontal outer in the surface of the stress arch steel (1-10-1) of upside 2 and the tie point of horizontal connection end steel plate (1-10-2) It after stretching and bends downward, and intersects respectively with lower layer stress arch steel (1-10-1)；

Vertical connecting pin steel plate (1-10-3) is horizontal steel plate, opens company in four interior angles of vertical connecting pin steel plate (1-10-3) Meet steel plate screw hole (1-10-4)；

Four vertical connecting reinforcements (1-10-6) are welded on vertical connecting pin steel plate (1-10-3), wherein 2 vertical connections The tie point of enhancing muscle (1-10-6) and vertical connecting pin steel plate (1-10-3) is located at 2 stress arch steels on the inside of arc The inside of the tie point of (1-10-1) and vertical connecting pin steel plate (1-10-3), straight up and with outer layer stress arch steel (1-10-1) intersects respectively；The tie point of another 2 vertical connecting reinforcements (1-10-6) and vertical connecting pin steel plate (1-10-3) It is located at the outer of 2, the outside stress arch steel (1-10-1) of arc and the tie point of vertical connecting pin steel plate (1-10-3) Side, it is vertical it is overhanging after and bend inwards, and intersect respectively with two vertical connecting reinforcements (1-10-6) of inside.