CN207092108U - A kind of suspension type inner support system suitable for base pit engineering - Google Patents

A kind of suspension type inner support system suitable for base pit engineering Download PDF

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Publication number
CN207092108U
CN207092108U CN201720950845.6U CN201720950845U CN207092108U CN 207092108 U CN207092108 U CN 207092108U CN 201720950845 U CN201720950845 U CN 201720950845U CN 207092108 U CN207092108 U CN 207092108U
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vertical
suspension rod
bracing members
support system
inner support
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刘汉凯
刘国宝
林蓼
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China Railway Siyuan Survey and Design Group Co Ltd
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China Railway Siyuan Survey and Design Group Co Ltd
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Abstract

The utility model discloses a kind of suspension type inner support system suitable for base pit engineering, belong to construction engineering technical field, including two row's fender posts/wall and its between multiple top supporting mechanisms, top Guan Liang, the linking beam in square bar under shaft-like bracing members, multiple vertical spaced vertical suspension rods, oblique drawbar and each bracing members, wherein horizontal support is provided by top supporting mechanism and bracing members for foundation ditch, and vertical suspension rod, oblique drawbar and linking beam are used to provide vertical supporting for horizontal support, form suspension type inner support system.It is of the present utility model to need to set the suspension type inner support system of vertical supporting suitable for base pit engineering, it effectively prevent the construction of existing base pit engineering neutrality stanchion and interim column, improve the efficiency of foundation pit construction, reduce the construction cost of foundation pit construction, and the waterproof effect and durability of Structural Engineering in base pit engineering are improved indirectly, improve the economy of base pit engineering.

Description

A kind of suspension type inner support system suitable for base pit engineering
Technical field
The utility model belongs to construction engineering technical field, and in particular to is propped up in a kind of suspension type suitable for base pit engineering Support system.
Background technology
Foundation ditch (foundation pit) is excavated in basic engineering position by substrate absolute altitude and basic plane size Heatable adobe sleeping platform, base pit engineering mainly include foundation pit supporting system design and construction and earth excavation, are a comprehensive very strong systems Engineering.Base pit engineering is to excavate a underground space downwards by ground, and to ensure the stability of base pit engineering, surrounding is led in its hole It is standing to be equipped with horizontal support structure.
In existing Foundation Pit Construction, especially for the base pit engineering that excavation width is larger, in foundation ditch inner bay If during horizontal support structure, in order to reduce the compression computational length of supporting member, it is ensured that the stability safety of horizontal support structure, Bear the loads such as the deadweight of horizontal support elements simultaneously, reduce the moment of flexure caused by vertical load such as support span and support deadweight and Shearing is, it is necessary to set vertical supporting system.
The vertical supporting system set in existing base pit engineering is generally in the form of steel column inserts column pile foundation, with steel Column realizes the inside vertical supporting of foundation ditch, although the vertical supporting system of above-mentioned form can play inside to a certain extent The effect of support, but can not substantially ensure that horizontal support structure stability safety, its there are problems that as follows some:1. steel is stood Post belongs to elongated compression member, and bearing capacity is mainly controlled by resistance to overturning, fails to give full play to the tensile and compressive strength of steel;2. steel Column needs to construct column pile foundation and inserts pile body certain length, causes extra stand column pile engineering cost, not economical enough;3. In excavation of foundation pit, soil body unloading easily causes hole bottom resilience or hole bottom artesian water causes bottom heave, and then drives on steel column It is floating, cause foundation ditch support bends to be pressurized, cause support additional bending moment and column extra normal force, easily cause support system and go along with sb. to guard him Structural instability, influence structure safety;4. the presence of steel column so that space is split in foundation ditch, and big machinery needs to avoid steel to stand Post is cut the earth, and influences muck haulage in earth excavation efficiency and hole;5. steel column passes through bottom plate, under bottom plate waterproof roll laying interrupt, wear Need to weld the special water-proofing treatment of steel plate for sealing water progress at bottom plate, waterproof effect is difficult to ensure that;6. steel column pass through bottom plate, in Plate, top plate, on its support, template is set up, reinforcing bar colligation and concreting have influence;7. strip foundation pit structure is often Twin spans symmetrical structure, beam (wall) cylinder system are located on foundation ditch axis, are built not influence beam (wall) post time, steel column and stand column pile Need to avoid beam (wall) post and deviate foundation ditch axis line position, cause to support the asymmetry of support system, to structure stress not Profit;8., it is necessary to set up scaffold and construction platform on floor after the completion of main structure construction, work high above the ground is carried out to steel column Segmentation is cut and transported, and potential safety hazard be present, and the secondary multi-segment extension of needs is recycled after steel column cutting, and welding quality is difficult to Ensure, be unfavorable for its recycling.The presence of drawbacks described above causes existing steel column formula inner support system in foundation pit construction Greatly limited using receiving, have impact on the stable security construction of base pit engineering, reduce the efficiency of construction of base pit engineering.
Utility model content
For the disadvantages described above or Improvement requirement of prior art, the utility model provides a kind of suitable for base pit engineering Suspension type inner support system, wherein by setting oblique drawbar and vertical suspension rod to carry out suspended support to horizontal supporting system, first The triangle stress system of closing is formed by the concrete support structure at the top of two oblique drawbars and foundation ditch, so as to oblique drawbar Tension, concrete support structure are pressurized, and give full play to the high pressure resistance energy of concrete material and the high tensile energy of oblique drawbar, Again by setting vertical suspension rod to hang it, vertical constraint is provided for horizontal supporting system, effectively increases inner support system Stability of strutting system, construction cost is reduced, improve the efficiency of foundation pit construction.
To achieve the above object, the utility model provides a kind of suspension type inner support system suitable for base pit engineering, its It is characterised by, including
Guan Liang, it is two, is respectively arranged at the relative both sides fender post/wall top portion of foundation ditch;
It is arranged at multiple top branch that between two Guan Liangs and both ends are each fixedly connected with Guan Liang one of them described respectively Support mechanism, each top supporting mechanism spacing parallel arranging on the horizontal plane at the top of foundation ditch are arranged;
Bracing members, it is in shaft-like, and in the foundation ditch below the top supporting mechanism, wherein, the bracing members edge Foundation ditch length direction horizontal interval arrange, each bracing members as between two opposite side fender posts/wall to support, for corresponding Horizontal supporting force is provided to the foundation pit enclosure stake/wall to maintain the stabilization of foundation ditch and control deformation in depth;
Multiple vertical suspension rods being arranged at intervals in foundation ditch, the vertical suspension rod one end are fixedly installed on the top braces machine Structure lower surface, the other end vertically stretch into foundation ditch as free end and cause the end to be located at the bracing members in respective depth Lower section, the free end end are connected respectively by two oblique drawbars, and the respective other end of two oblique drawbars is fixed respectively In the Guan Liang at the top of the foundation ditch, so that the vertical suspension rod is tensed by two oblique drawbars to be carried to the vertical suspension rod The hanging pulling force fed to;And
The bar shaped linking beam being fixed on the vertical suspension rod lower free end, it is arranged at below each bracing members, When providing restraining force vertically upward for being tensed in the vertical suspension rod by two oblique drawbars, realize to the steel branch Support and the vertical hanging of the linking beam.
As further improvement of the utility model, more interval cloth are provided with the foundation ditch on multiple different depths The bracing members put, correspondingly, each vertical suspension rod is corresponding more piece, wherein the upper end of next vertical suspension rod of section with The vertical downrod lower end of a upper section is is removably secured connection, and the linking beam is corresponded to multiple and is respectively placed in corresponding deep Each bracing members bottom of degree is simultaneously fixedly connected to form vertical supporting to it with the bracing members.
As further improvement of the utility model, connected between the linking beam and the bracing members by flute profile fixture Connect.
As further improvement of the utility model, each spaced apart vertical suspension rod is arranged between the bracing members Space in.
As further improvement of the utility model, axisymmetrical of two oblique drawbars along the vertical suspension rod is set Put.
As further improvement of the utility model, the vertical suspension rod is connected with the top supporting mechanism by segmented head Connect, the lower section of the top supporting mechanism is fixed in one end of the segmented head, one end of its other end and the vertical suspension rod It is fastenedly connected, for not transmitting pulling force in the vertical pressure of only being transmitted between suspension rod and the top supporting mechanism to realize State the stabilization of bracing members vertically upward.
As further improvement of the utility model, bridging is additionally provided between the adjacent vertical suspension rod;It is described Bridging includes two strut and ties arranged in a crossed manner, and the both ends of the strut and tie arranged in a crossed manner connect respectively one it is described vertical The top of suspension rod and the bottom of adjacent thereto vertical suspension rod are used to prevent the vertical suspension rod longitudinal direction to be formed The scissors supporting construction of skew.
As further improvement of the utility model, the linking beam is two, is symmetrically arranged in the vertical suspension rod Two bottom sides.
In general, by the contemplated above technical scheme of the utility model compared with prior art, have with following Beneficial effect:
(1) the suspension type inner support system of the present utility model suitable for base pit engineering, hung by using vertical suspension rod Form be used as inner support system to the vertical supporting of base pit engineering horizontal support structure, use the closing three of power in top layer Angular rule, the stress system of closing is formed by two oblique drawbars and top supporting mechanism, give full play to the characteristic of material;
(2) the suspension type inner support system of the present utility model suitable for base pit engineering, by setting suspension type inner support System, the construction of stand column pile and interim column is effectively prevent, the step of enormously simplify foundation pit construction, improve foundation pit construction Efficiency, reduce the construction cost of foundation pit construction;
(3) the suspension type inner support system of the present utility model suitable for base pit engineering, by setting suspension type inner support System, due to there is no the barrier of interim column in digging process, the efficiency of construction excavation and muck haulage is further improved, is shortened Duration, reduce construction cost;
(4) the suspension type inner support system of the present utility model suitable for base pit engineering, passes through layered arrangement inner support system System, can further lift the inner support stability of a system during foundation pit construction, ensure the security of Foundation Pit Construction, and can Build layering in work progress returning and remove inner support system in the range of pre- construction height, ensure that the complete of inner support system unit Whole property, improve the repeatable economy for utilizing attribute, further improving Foundation Pit Construction of inner support system unit;
(5) the suspension type inner support system of the present utility model suitable for base pit engineering, it effectively prevent stand column pile and face Shi Lizhu builds the adverse effect of each plank frame in work progress to returning, and ensure that the stability of Structural Engineering in foundation ditch, is lifted The waterproof effect and durability of Structural Engineering, reduce because of structural failure and increased Maintenance and Repair expense, indirectly in foundation ditch Improve the economy of base pit engineering.
Brief description of the drawings
Fig. 1 is the overall structure signal of the suspension type inner support system suitable for base pit engineering of the utility model embodiment Figure;
Fig. 2 is the horizontal layout when suspension type inner support system of the utility model embodiment is arranged in strip foundation ditch Figure;
Fig. 3 is longitudinal section view when the suspension type inner support system of the utility model embodiment is arranged in strip foundation ditch Figure;
Fig. 4 be the utility model embodiment suspension type inner support system structure diagram in local I enlarged diagram;
Fig. 5 be the utility model embodiment suspension type inner support system in C-C directions section view in local I enlarged drawing Figure;
Fig. 6 be the utility model embodiment suspension type inner support system structure diagram in local II amplification signal Figure;
Fig. 7 be the utility model embodiment suspension type inner support system structure diagram in local III amplification signal Figure;
Fig. 8 is the top braces of the suspension type inner support system suitable for base pit engineering in the utility model embodiment two Structural representation;
Fig. 9 is the top braces of the suspension type inner support system suitable for base pit engineering in the utility model embodiment three Structural representation;
Figure 10 is the top branch of the suspension type inner support system suitable for base pit engineering in the utility model embodiment four Support structure schematic diagram;
In all of the figs, same reference represents identical technical characteristic, is specially:1. fender post/wall, 2. hats Beam, 3. top supporting mechanisms, 4. connectors, 5. spacing steel caps, 501. horizontal steel plates, 502. vertical spacing steel plates, 6. segmented heads, 7. vertical suspension rod, 8. oblique drawbars, 9. connecting plates, 10. linking beams, 11. bracing members, 12. steel supporting plates, 13. bottom plate underlayers and Waterproof layer, 14. bottom plates, 15. side walls, plate in 16., 17. top plates, 18. bridgings, 19. flute profile fixtures.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining this Utility model, it is not used to limit the utility model.
As long as in addition, technical characteristic involved in each embodiment of the utility model disclosed below each other it Between do not form conflict can be mutually combined.
Fig. 1~7 show the structure of the suspension type inner support system suitable for base pit engineering in a preferred embodiment Schematic diagram.Wherein, Fig. 1 is the overall structure of the suspension type inner support system suitable for base pit engineering of the utility model embodiment Schematic diagram;Fig. 2 is the floor plan when suspension type inner support system of the utility model embodiment is arranged in strip foundation ditch; Fig. 3 is the longitudinal sectional view when suspension type inner support system of the utility model embodiment is arranged in strip foundation ditch;Fig. 4 is this Local I enlarged diagram in the suspension type inner support system structure diagram of utility model embodiment;Fig. 5 is the utility model C-C sectional views in the suspension type inner support system of embodiment in local I enlarged drawing;Fig. 6 is the utility model embodiment Suspension type inner support system structure diagram in local II enlarged diagram;Fig. 7 is the hanging of the utility model embodiment Local III enlarged diagram in formula inner support system structure diagram;Fig. 8 is applied in the utility model embodiment two The top support structure schematic diagram of the suspension type inner support system of base pit engineering;Fig. 9 is suitable in the utility model embodiment three Top support structure schematic diagram for the suspension type inner support system of base pit engineering;Figure 10 is in the utility model embodiment four The suspension type inner support system suitable for base pit engineering top support structure schematic diagram.Further, Fig. 1 can be Fig. 2 In schematic construction press direction A-A sectional view, Fig. 3 can be Fig. 2 in schematic construction press direction B-B sectional view.
Further specifically, the foundation pit structure in a preferred embodiment is elongated horizontal foundation ditch, base pit engineering Longitudinal cross-section be preferably rectangle, the both sides of base pit engineering be provided with the fender post of the insertion side bottom certain depth of foundation ditch two/ Wall 1;Further, on the longitudinal profile of foundation pit structure, preferably layered arrangement has and its both ends and base parallel with foundation ditch bottom surface The bracing members 11 that the both sides fender post/wall 1 in hole is held out against, the both ends of bracing members 11 are preferably vertical with the both sides crater wall face of foundation pit structure Set, bracing members 11 in a preferred embodiment have two layers on the longitudinal direction of foundation pit structure, between two layers of bracing members 11 Interval is not specifically limited, and it calculates specific determine according to the control of the bearing capacity of foundation pit enclosure.
Further, it is preferable to the both sides at the top of foundation pit structure in embodiment are provided with two Guan Liangs along foundation ditch is longitudinally asymmetric 2, Guan Liang 2 is preferably disposed on the top of fender post/wall 1, and the top braces machine for supporting foundation pit structure is provided between Guan Liang 2 Structure 3, the top supporting mechanism 3 in a preferred embodiment are concrete support, as concrete support mechanism;Further specifically, On the horizontal section of foundation pit structure, it is preferably provided with positioned at the junction of Guan Liang 2 of top supporting mechanism 3 with foundation pit structure both sides Connector 4, connector 4 further preferably can nuzzle in Guan Liang 2 in advance.
Further, the middle part of the top supporting mechanism 3 in a preferred embodiment corresponds to both sides connector 4 and is symmetrical arranged Limited location steel cap 5, as shown in Figures 4 and 5.Spacing steel cap 5 is preferably arranged at concrete in the form of pre-buried and supports 3 span centre bottoms, is used for The horizontal displacement of vertical suspension rod 7 of suspension is limited, and spacing steel cap 5 specifically includes pre- concrete support of nuzzling in a preferred embodiment In horizontal steel plate 501 and vertically disposed for vertical spacing to vertical suspension rod 7 of in the vertical direction with horizontal steel plate 501 Spacing steel plate 502, the vertical spacing steel plate 502 are preferably tubular, and it is on horizontal steel plate 501;Further, vertical limit Segmented head 6 is provided with the steel plate 502 of position, is connected with vertical suspension rod 7 below, upper end is inserted in spacing steel cap and withstands top braces The bottom of mechanism 3;Specifically, the both ends of vertical suspension rod 7 are provided with connector, for more vertical suspension rods 7 matching connections and/ Or it is fastenedly connected with segmented head 6.
Further, the quantity of the vertical suspension rod 7 in a preferred embodiment and length preferably correspond to bracing members 11 The number of plies and vertical spacing, and on the longitudinal cross-section of base pit engineering, vertical suspension rod 7 is arranged under corresponding top supporting mechanism 3 Side, it is preferably passed through from same layer steel support structure between two bracing members 11, as shown in Figures 1 to 3.Further, preferred In embodiment, the setting number of plies of bracing members 11 is two layers, corresponding, it is necessary to construct back what is built below 11 in top bracing members Plank frame is also two layers, i.e., plate 16 and bottom plate 14 in being respectively from top to bottom, further, the vertical suspension rod 7 being correspondingly arranged Quantity be also two, on the longitudinal cross-section of base pit engineering, the upper end of first vertical suspension rod 7 connects segmented head 6, is placed in limit In position steel cap 5, its lower end and the upper end of second vertical suspension rod 7 are fastenedly connected, overall vertical with bottom of foundation ditch plane.
Vertical suspension rod 7 and Guan Liang 2 are connected further, it is preferable to be provided with oblique drawbar 8 in embodiment, oblique drawbar 8 It can be more preferably reinforcing pull rod.Specifically as shown in Figure 6, in the bottom preferred pair of the vertical suspension rod 7 of basipetal first segment Claim to be provided with the connecting plate 9 for connecting the lower end of oblique drawbar 8, the upper end connection of oblique drawbar 8 is positioned at both sides hat at the top of foundation ditch Default connector 4 on beam 2, then vertical 7, two oblique drawbars 8 of suspension rod and concrete support 3 are collectively forming two with vertical suspension rod 7 symmetrical triangle load-carrying construction, two oblique drawbars 8 and concrete support 3 form a stable triangle load-carrying construction, realize To the inside suspended support of foundation ditch top horizontal supporting construction;Further, the cross sectional shape of connecting plate 9 is preferably to be trapezoidal And/or it is square, linking beam 10 is provided with its upper surface, the setting quantity of its corresponding every vertical suspension rod 7 is preferably two, point Not She Yu vertical suspension rod 7 both sides, arranged with the axisymmetrical of vertical suspension rod 7, linking beam 10 in the present embodiment is preferably Channel-section steel, and the side of channel-section steel abuts the periphery wall of vertical suspension rod 7, side is located on the upper surface of connecting plate 9 below channel-section steel, Another side of channel-section steel preferably contacts between the lower surface of bracing members 11, bracing members 11 and linking beam 10, linking beam 10 It is provided for sharing bracing members 11 to conduct oneself with dignity and strengthen its stability;Further, it is preferable to connected below the second vertical suspension rod 7 of section The bottom of vertical suspension rod 7 be provided with steel supporting plate 12, for setting linking beam 10 on the top of steel supporting plate 12, steel supporting plate 12 is preferred The both sides of vertical suspension rod 7 are arranged at the axisymmetrical of vertical suspension rod 7, that is, are arranged at the linking beam 10 on steel supporting plate 12 also with perpendicular Set to the axisymmetrical of suspension rod 7;Consolidate it is further preferred that the place that bracing members 11 are corresponded on linking beam 10 is provided with flute profile Determine part 19, flute profile fixture 19 is preferably square frame-shaped flute profile fixture, and its both ends connects linking beam along the axial restraint of linking beam 10 On 10, and bracing members 11 are radially confined within flute profile fixture 19, as shown in Figure 3, flute profile fixture 19 is with connecting Binder 10 forms closed collar structure, for preventing bracing members 11 from generation flexing unstability on vertical direction, entering in the horizontal direction Preferably, flute profile fixture 19 is preferably channel-section steel to one step, groove of the bracing members 11 axially across channel steel shape flute profile fixture 19.
Further, on the longitudinal cross-section of base pit engineering, the vertical suspension rod 7 on sustained height is linked by perpendicular The stable connection of beam 10, to ensure the longitudinal stability of inner support system, and exist with the vertical suspension rod 7 with the bracing members 11 that layer is arranged On the premise of both ends and foundation ditch side are held out against, longitudinal load-bearing on linking beam 10, prevent bracing members 11 due to Gravitative Loads and Shifted in vertical direction and unstability;It is further preferred that in order to further ensure that vertical suspension rod 7 is not sent out on foundation ditch longitudinal direction Raw vertical misalignment, sets bridging 18 preferably between the adjacent vertical suspension rod 7 of same layer, and the bridging 18 is set by two intersections Put strut and tie composition, by taking the vertical suspension rod 7 of adjacent No.1 and No. two vertical suspension rods 7 as an example, wherein one end of a pull bar and The top connection of the vertical suspension rod 7 of No.1, its other end are connected with the bottom of adjacent No. two vertical suspension rods 7, correspondingly, Ling Yigen Pull bar and above-mentioned strut and tie are arranged in a crossed manner, and its one end connects the bottom of the vertical suspension rod 7 of No.1, and the other end connects No. two vertical suspension rods 7 top, two strut and ties form bridging 18 to ensure that oscillation in the pitch mode skew does not occur for vertical suspension rod 7 on foundation ditch longitudinal direction.
It is further preferred that the length of oblique drawbar 8, size, material etc. are not specifically limited, it can be according to base pit engineering Concrete condition be preferably provided with, correspondingly, the size of vertical suspension rod 7, material etc. are also not specifically limited, connector 4, even The cross sectional shape and/or construction of fishplate bar 9 and the grade part of steel supporting plate 12 also can be specifically chosen according to stressing conditions, implement in the present invention It is not specifically limited in example.It is further preferred that when first of support top has the truss structures such as Bailey beam (such as across station Road surface bedding structure), its bearing capacity meets when bearing vertical reinforcing pull rod concentrated force, also can be mixed with first in truss frame structure Vertical suspension rod is directly set between solidifying soil support, vertical hanging pulling force is passed into the truss structures such as Bailey beam, forms vertical lifting Hanging body system, as shown in figs. 8-10.
One preferred embodiment base pit engineering needs two layers of underground structure of constructing, that is, needs to set one of concrete to support and two layers Bracing members, it carries out the construction procedure of strip Foundation Pit Construction with above-mentioned suspension type inner support system and is preferably as follows:
S1:Traffic data process is carried out, builds construction guard fender, and corresponding pipeline is changed into shifting, is applied behind smooth construction site Work leads the construction of wall and fender post/wall 1.
S2:Foundation ditch top is carried out after being excavated to concrete support 3 (i.e. first support) bottom absolute altitude, carries out Guan Liang 2 and concrete branch The construction of support 3, and the built-in connection 4 in Guan Liang 2, and support the pre-buried spacing grade of steel cap 5 part in 3 span centre bottoms in concrete.
S3:Continuing excavation pit, (such as second support is default to first layer bracing members 11 (i.e. second supports) bottom absolute altitude The bottom 1m of position) after, set the vertical suspension rod 7 of first segment that connecting plate 9 simultaneously is set in its bottom, connector 4 and connecting plate 9 it Between oblique drawbar 8 is set, first group of linking beam 10 is set in the bottom of the vertical suspension rod 7 of first segment, sets up first layer bracing members 11 (i.e. second supports) and flute profile fixture 19 is set, bridging 18 is set between adjacent vertical suspension rod 7.
S4:Continuing excavation pit, (the such as the 3rd support is default to second layer bracing members 11 (the i.e. the 3rd support) bottom absolute altitude The bottom 1m of position) set up afterwards, the vertical suspension rod 7 of the second section is set and steel supporting plate 10 is set in its bottom, and on steel supporting plate 10 Second group of linking beam 10 is set, second layer bracing members 11 (the i.e. the 3rd support) is set up and corresponding flute profile fixture 19 is set, Bridging 18 is set between adjacent vertical suspension rod 7.
S5:Continue to be excavated to bottom of foundation ditch, carried out back building construction upwards by bottom of foundation ditch, substrate bed course is carried out in bottom 13rd, the construction of bottom plate 14, part side wall, bottom girder and structural column.
S6:Second layer bracing members 11 (the i.e. the 3rd support) are removed successively, second group of linking beam 10, second saves vertical suspension rod The structure such as 7, the side wall waterproof layer laying of subbasement is carried out, completes subbasement side wall, middle plate 16 and structure pile driving construction, And the form that middle plate 16 is preferably poured by armored concrete is set up.
S7:First layer bracing members 11 (i.e. second supports), first group of linking beam 10, the vertical suspension rod of first segment are removed successively The structure such as 7 and oblique drawbar 8, the side wall waterproof layer laying of underground first layer is carried out, completes underground first layer side wall and structure pile, And the top plate 17 at the top of B1 is constructed, the form that top plate 17 is preferably poured by armored concrete is set up.
S8:Concrete support 3 (i.e. first support) is removed, carries out backfilling earthing and recovers respective lines, Demolition Construction leads wall And construction guard fender, recover earth surface area normal use, complete Foundation Pit Construction.
Above-mentioned construction procedure carries out underground suitable for foundation ditch and constructed for two layers, if base pit engineering has three layers or three layers with Shangdi The construction requirement of lower structure, it can repeat to add S4 construction procedure between S4 and S5, set up corresponding supporting construction, and do phase The pattern handling answered, further, can also increase between S5 and S6 equivalent layer plank frame return build, supporting construction remove etc. Step, step content are carried out with reference to S6, are finally completed the overall process construction of base pit engineering;Further, as art technology Personnel also can completely or partially replace with other level it should be understood that providing the bracing members 11 of horizontal support for Foundation Pit Construction Supporting construction, such as concrete supporting construction, and bracing members 11 can be steel pipe or H profile steel/I-steel etc. in specific select Other steel materials.
Using suspension type inner support system of the present utility model and according to above-mentioned steps carry out Foundation Pit Construction when, its Excavation initial stage (such as step S1) need not carry out the construction of stand column pile and/or interim column, simplify construction procedure, improve and apply Work efficiency rate, reduces construction cost, and (such as step S2~S5) is corresponding also without the influence of interim column in digging process, excavation, The efficiency of muck haulage is further lifted, and the construction period of base pit engineering is greatly shortened, and apply in top plate 17, middle plate 16 and bottom plate 14 Work process (such as step S5~S7), also eliminating the threading of interim column influences, and improves the integrality of foundation ditch internal structure.
As it will be easily appreciated by one skilled in the art that preferred embodiment of the present utility model is the foregoing is only, not To limit the utility model, any modification of all made within spirit of the present utility model and principle, equivalent substitution and change Enter, should be included within the scope of protection of the utility model.

Claims (8)

  1. A kind of 1. suspension type inner support system suitable for base pit engineering, it is characterised in that including
    Guan Liang (2), it is two, is respectively arranged at the top of the relative both sides fender post of foundation ditch/wall (1);
    It is arranged at multiple tops that between two Guan Liangs (2) and both ends are each fixedly connected with Guan Liang one of them described (2) respectively Supporting mechanism (3), each top supporting mechanism (3) spacing parallel arranging on the horizontal plane at the top of foundation ditch are arranged;
    Bracing members (11), it is in shaft-like, and in the foundation ditch below the top supporting mechanism (3), wherein, the bracing members (11) arrange that each bracing members (11) are as pair between two opposite side fender posts/wall (1) along foundation ditch length direction horizontal interval Support, for providing horizontal supporting force to the foundation pit enclosure stake/wall (1) in respective depth to maintain the stabilization of foundation ditch and control Deformation;
    Multiple vertical suspension rods (7) being arranged at intervals in foundation ditch, vertical suspension rod (7) one end are fixedly installed on the top braces Mechanism (3) lower surface, the other end is vertically stretched into as free end in foundation ditch and make it that the end is located at described in respective depth Below bracing members (11), the free end end is connected respectively by two oblique drawbars (8), and two oblique drawbar (8) is respective The other end be individually fixed in the Guan Liang (2) at the top of foundation ditch Nei so that the vertical suspension rod (7) is by two oblique drawbars (8) tense to provide upward hanging pulling force to the vertical suspension rod (7);And
    The bar shaped linking beam (10) being fixed on described vertical suspension rod (7) lower free end, it is arranged at each bracing members (11) lower section, restraining force vertically upward is provided for being tensed in the vertical suspension rod (7) by two oblique drawbars (8) When, realize the vertical hanging to the bracing members (11) and the linking beam (10).
  2. 2. the suspension type inner support system according to claim 1 suitable for base pit engineering, wherein, it is multiple in the foundation ditch The more spaced apart bracing members (11) are provided with different depth, correspondingly, each vertical suspension rod (7) is pair The more piece answered, wherein the upper end and vertical suspension rod (7) lower end of upper one section of next vertical suspension rod (7) of section are the company of being removably secured Connect, and the linking beam (10) correspond to each bracing members (11) bottom that is multiple and being respectively placed in corresponding depth and with it is described Bracing members (11) are fixedly connected to form vertical supporting to it.
  3. 3. the suspension type inner support system according to claim 1 or 2 suitable for base pit engineering, wherein, the linking beam (10) connected between the bracing members (11) by flute profile fixture (19).
  4. 4. the suspension type inner support system according to claim 1 or 2 suitable for base pit engineering, wherein, each arranged for interval Vertical suspension rod (7) be arranged in the space between the bracing members (11).
  5. 5. the suspension type inner support system according to claim 1 or 2 suitable for base pit engineering, wherein, two are described oblique Axisymmetrical to pull bar (8) along the vertical suspension rod (7) is set.
  6. 6. the suspension type inner support system according to claim 1 or 2 suitable for base pit engineering, wherein, the vertical lifting Bar (7) is connected with the top supporting mechanism (3) by segmented head (6), and the top is fixed in one end of the segmented head (6) The lower section of supporting mechanism (3), one end of its other end and the vertical suspension rod (7) is fastenedly connected, in the vertical suspension rod (7) pressure is only transmitted between the top supporting mechanism (3) and does not transmit pulling force to realize the bracing members (11) vertically upward Stabilization.
  7. 7. the suspension type inner support system according to claim 1 or 2 suitable for base pit engineering, wherein, adjacent is described Bridging (18) is additionally provided between vertical suspension rod (7),
    The bridging (18) includes two strut and ties arranged in a crossed manner, and the both ends of the strut and tie arranged in a crossed manner connect respectively A piece vertically top of suspension rod (7) and the bottom of adjacent thereto vertical suspension rod (7) are used to prevent to be formed The only scissors supporting construction of described vertical suspension rod (7) vertical misalignment.
  8. 8. the suspension type inner support system according to claim 1 or 2 suitable for base pit engineering, wherein, the linking beam (10) it is two, is symmetrically arranged in the two bottom sides of the vertical suspension rod (7).
CN201720950845.6U 2017-08-01 2017-08-01 A kind of suspension type inner support system suitable for base pit engineering Active CN207092108U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107246016A (en) * 2017-08-01 2017-10-13 中铁第四勘察设计院集团有限公司 A kind of suspension type inner support system and foundation ditch construction method suitable for base pit engineering
CN109098098A (en) * 2018-10-23 2018-12-28 中交第公路工程局有限公司 Suspension type constructing tie beam device and suspension type constructing tie beam method
CN115976976A (en) * 2023-03-17 2023-04-18 中化学交通建设集团有限公司 Large-scale rapid assembling type model of midspan non-landing support and construction method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107246016A (en) * 2017-08-01 2017-10-13 中铁第四勘察设计院集团有限公司 A kind of suspension type inner support system and foundation ditch construction method suitable for base pit engineering
CN107246016B (en) * 2017-08-01 2023-02-28 中铁第四勘察设计院集团有限公司 Hanging type inner support system suitable for foundation pit engineering and foundation pit construction method
CN109098098A (en) * 2018-10-23 2018-12-28 中交第公路工程局有限公司 Suspension type constructing tie beam device and suspension type constructing tie beam method
CN109098098B (en) * 2018-10-23 2024-04-02 中交一公局集团有限公司 Hanging type tie beam construction device and hanging type tie beam construction method
CN115976976A (en) * 2023-03-17 2023-04-18 中化学交通建设集团有限公司 Large-scale rapid assembling type model of midspan non-landing support and construction method thereof

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